USRE40002E1 - Treatment of presbyopia and other eye disorders using a scanning laser system - Google Patents
Treatment of presbyopia and other eye disorders using a scanning laser system Download PDFInfo
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- USRE40002E1 USRE40002E1 US10/626,486 US62648603A USRE40002E US RE40002 E1 USRE40002 E1 US RE40002E1 US 62648603 A US62648603 A US 62648603A US RE40002 E USRE40002 E US RE40002E
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00802—Methods or devices for eye surgery using laser for photoablation
- A61F9/00804—Refractive treatments
- A61F9/00808—Inducing higher orders, e.g. for correction of presbyopia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00825—Methods or devices for eye surgery using laser for photodisruption
- A61F9/00838—Correction of presbyopia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00865—Sclera
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00872—Cornea
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/00781—Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment
Definitions
- the present invention relates to methods and apparatus for the treatment of presbyopia and the treatment and prevention of glaucoma using dual-beam scanning lasers.
- Corneal reshaping including a procedure called photorefractive keratectomy (PRK) and a new procedure called laser assisted in situ keratomileusis, or laser intrastroma keratomileusis (LASIK), has been performed by lasers in the ultraviolet (UV) wavelength of 193-213 nm.
- UV refractive lasers include ArF excimer lasers at 193 nm and other non-excimer, solid-state lasers, such as the one patented by the present inventor in 1992 (U.S. Pat. No. 5,144,630).
- Precise, stable corneal reshaping requires lasers with strong tissue absorption (or minimum penetration depth) such that the thermal damage zone is at a minimum (less than few microns).
- Thermal lasers such as Ho:YAG have been proposed for the correction of hyperopia by laser-induced coagulation of the corneal.
- the present inventor has also proposed the use of a laser-generated bifocal for the treatment of presbyopic patients but fundamental issues caused by age of presbyopic patients still remains unsolved in those prior approaches.
- One objective of the present invention is to provide an apparatus and method to obviate these drawbacks in the above Schaker patents.
- the preferred embodiments of the present surgical laser consists of a combination of an ablative-type laser and a coagulative-type laser.
- the ablative-type laser has a wavelength range of from 0.15 to 0.35 microns and from 2.6 to 3.2 microns and is operated in a Q-switch mode such that the thermal damage of the corneal tissue is minimized.
- the coagulative-type lasers includes a thermal laser having a wavelength of between 0.45 and 0.9 microns and between 1.5 and 3.2 microns, and between 9 and 12 microns operated at a long-pulse or continuous-wave mode.
- a coagulative laser may have the beam delivered by a scan or by a fiber-coupled device which can be manually scanned over the cornea. It is yet another embodiment of the present invention to focus the laser beams in a small circular spot or a line pattern.
- the exact laser spot size and its propagating stability are not critical.
- FIG. 1 is a block diagram of an integrated laser system consisting of two lasers of different wavelengths coupled to the cornea by mirrors and a scanning device;
- FIG. 2 is a block diagram of a laser system where the coagulative laser is fiber-coupled and manually delivered to the cornea;
- FIG. 3 is the schematic drawing of the anteroposterior section through the anterior portion of a human eye, where the sclera and ciliary muscle are shown;
- FIGS. 4A-4D are diagrams of the possible ablation patterns which will achieve a presbyopia-reversal.
- FIG. 1 of the drawings is a schematic of a laser system having an ablative laser 1 producing a laser beam 2 of a predetermined wavelength and focused by a lens 3 onto a reflecting mirror 4 which is coupled to another reflecting mirror 5 .
- the system also consists of a coagulation laser 6 having a laser beam 7 of a predetermined wavelength focused by a lens 3 A through a mirror 5 .
- the ablation laser 1 beam 2 and the coagulation laser 6 beam 7 are directed onto a scanner 8 .
- the beams 2 and 7 are then reflected by a mirror 9 onto the cornea 10 of a patient's eye.
- the scanner 8 consists of a pair of motorized coated mirrors with a 45 degree highly reflecting both the ablative laser beam 2 and the coagulative laser beam 7 .
- the mirror 4 and mirror 9 are highly reflective to the wavelength of the beams 2 and 7 .
- Mirror 5 is coated such that it is highly reflective of laser beam 2 but highly transparent to laser beam 7 .
- the focusing lens 3 has a focal length of about 10-100 cm such that the spot size of the ablative laser beam 2 is about 0.1-0.8 mm on the corneal surface.
- the focusing lens 3 A also has a focal length about 10-100 cm such that the spot size of the coagulative laser beam 7 is about 0.2-2.0 mm on the corneal surface.
- both the ablative and the coagulative lasers beams 2 and 7 are scanned by the scanner 8 over the corneal sclera area of the eye 10 to generate predetermined patterns, as shown in FIG. 4 .
- FIG. 1 both the ablative and the coagulative lasers beams 2 and 7 are scanned by the scanner 8 over the corneal sclera area of the eye 10 to generate predetermined patterns, as shown in FIG. 4 .
- FIG. 1 both the
- the said coagulative laser 6 is used to prevent the potential bleeding during the ablation process of the sclera tissue.
- the coagulative laser 6 beam 7 has a spot size larger then the ablative laser 1 beam 2 and has an average power in the range of 20-3000 mW, depending upon the size of the focused beam.
- the temperature increase of the sclera tissue produced by the coagulative laser beam 7 should be in the range of 40-70 degree Centigrade.
- the preferred embodiment of the laser 1 and 6 includes a pulsed ablative laser with a pulse width less than 200 nanoseconds such as a Er:YAG laser; Er:YSGG laser; an optical parametric oscillation (OPO) at 2.6-3.2 microns; a gas laser with a wavelength of 2.6-3.2 microns; an excimer laser of ArF at 193 nm; a XeCl laser at 308 nm; a frequency-shifted solid state laser at 0.15-3.2 microns; a CO laser at about 6.0 microns and a carbon dioxide laser at 10.6 microns.
- a pulsed ablative laser with a pulse width less than 200 nanoseconds such as a Er:YAG laser; Er:YSGG laser; an optical parametric oscillation (OPO) at 2.6-3.2 microns; a gas laser with a wavelength of 2.6-3.2 microns; an excimer laser of ArF at 193 nm; a XeCl laser at 308
- the long pulse coagulative lasers have a pulse longer than 200 nanoseconds of a green laser; or an argon laser; or a Ho:YAG at 2.1 microns; or a Er:glass at 1.54 microns; or an Er:YAG; or an Er:YSGG; or a diode laser at 0.8-2.1 microns, or any other gas lasers at 0.8-10.6 microns.
- a green laser or an argon laser
- a Ho:YAG at 2.1 microns or a Er:glass at 1.54 microns
- an Er:YAG; or an Er:YSGG or a diode laser at 0.8-2.1 microns, or any other gas lasers at 0.8-10.6 microns.
- the coagulative laser should have an, average power of about 30 mW for a small spot and about to 3 W for a larger spot.
- an alternative schematic for the coagulative laser 6 is coupled to a fiber 11 for delivery of the beam to the cornea, where a line pattern may be performed by manually scanning the beam over the cornea.
- a fiber-coupled coagulation laser 6 may be focused by a cylinder lens to form a line spot on the cornea where a typical spot size of 0.2-2.0 mm ⁇ 3.0-5.0 mm is preferred.
- the ablative laser 1 has the same schematic as that of FIG. 1 where the laser beam 2 is coupled to the scanner 8 and reflected by the mirror 9 onto the cornea.
- An alternative embodiment of the present invention is to use a cylinder lens to focus the ablative laser 1 to a line spot with a size of 0.1-0.8 mm ⁇ 3.0-5.0 mm on the corneal surface to eliminate the scanner 8 .
- Another embodiment may use an optical fiber or an articulate arm to deliver both the coagulative and ablative laser beams such that the presbyopia treatment may be conducted manually without the need of a scanner or reflecting mirrors.
- FIG. 3 shows the lens of a human eye 12 connected to the sclera 13 and ciliary body 14 by zonule fibers 15 .
- Expansion of the sclera 13 will cause the ciliary muscle to contract and the lens becomes more spherical in topography with a shorter radii of curvature for near objects.
- the reversed process of ciliary muscle relaxation will cause a longer radii of curvature for distant objects. Therefore, laser ablation of the sclera tissue will increase the accommodation of the ciliary body for the presbyopic patient to see both near and distance.
- the depth of the laser ablation needs to be approximately 80%-90% of the sclera thickness which is about 500-700 microns.
- the ablation depth should not cut through the choroid. It is therefore clinically important that the patient's sclera thickness be measured pre-operatively and the laser ablation depth controlled.
- a scanning laser is used to control this depth by the number of scanning lines or slots over the selected area at a given set of laser parameters.
- PMMA is used to calibrate the depth of tissue ablation.
- the surgeon may observe the color change of the ablated sclera tissue to determine when the ablation depth reaches the interface of the sclera and the ciliary.
- FIG. 4 shows examples of ablation patterns which will cause sclera expansion and increase the accommodation of the presbyopic patient.
- line patterns are conducted between circles 16 and 17 which have diameters of about 8-11 mm and 12-15 mm, respectively.
- the width of the ablated lines are about 0.1-0.5 mm with a depth of 80%-90% of the sclera.
- Eight (8) lines are shown in FIG. 4A as an example but it can be more or less without departing from the spirit and scope of the invention. Enhancement may be performed by adding more ablation lines.
- FIG. 4B shows a ring pattern with a diameter 18 of about 12-14 mm.
- a two-ring pattern 19 is shown in FIG.
- FIG. 4C where two circles have diameters of about 10 mm and 12 mm, respectively.
- FIG. 4D Another example of an ablation pattern is shown in FIG. 4D where the ablation laser is focused to a round spot 20 of about 0.1-0.5 mm in diameter and scanned over the sclera area to form an eight spot symmetric ring which has a diameter of about 12-14 mm.
- the coagulative laser described in FIGS. 1 and 2 simultaneously deliver these patterns such that the sclera tissue may be coagulated as the tissue is being ablated.
- the preferred spot sizes of the coagulative lasers are larger than that of the ablative laser so that the alignment of the coagulative laser is not critical.
- Another embodiment of controlling the ablation area of the sclera area is to use a metal mask which has a plurality of slits each having an approximate dimension of 0.1-0.3 mm ⁇ 3.0-5.0 mm. Both of the ablative and coagulative lasers will scan over the mask which is placed on the corneal surface to generate the desired slit pattern on the sclera.
- the small laser spot sizes of 0.1 mm which may be difficult to achieve, are not needed in order to generate the slit size on the cornea.
- Laser spot sizes of 0.2-1.0 mm will generate the desired ablation dimension on the sclera after scanning over the mask.
- the embodiment of using a mask will not require a precise stability of the laser beam path onto the corneal surface. Without using a mask, both the exact laser beam spot size and its stability in propagating would be essential.
- Another embodiment of sclera expansion of the present invention is to use diamond knife for the incision of the sclera tissue in the patterns described in FIGS. 4A , 4 B and 4 C where the coagulation laser is simultaneously applied onto the cut tissue to prevent bleeding.
- the incision depth should be about 80% to 90% of the sclera thickness in order to achieve the effects of sclera expansion. Accordingly, the pre-operative measurement of the sclera thickness is essential for the knife incision procedure and surgeon's skill is more important than that of using an ablative laser, in which the ablation depth of the sclera tissue is well controlled by the numbers of scanning lines in a given pattern.
Abstract
Presbyopia is treated by a method which uses ablative lasers to ablate the sclera tissue and increase the accommodation of the ciliary body. Tissue bleeding is prevented by an ablative laser having a wavelength of between 0.15 and 3.2 micron. A scanning system is proposed to perform various patterns on the sclera area of the cornea to treat presbyopia and to prevent other eye disorder such as glaucoma. Laser parameters are determined for accurate sclera expansion.
REEXAMINATION RESULTS
The questions raised in reexamination request no. 90/006,090, filed Aug. 22, 2001, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e), for ex parte reexaminations, or the reexamination certificate required by 35 U.S.C. 316 as provided in 37 CFR 1.997(e) for inter partes reexaminations.
Description
1. Field of the Invention
The present invention relates to methods and apparatus for the treatment of presbyopia and the treatment and prevention of glaucoma using dual-beam scanning lasers.
2. Prior Art
Corneal reshaping, including a procedure called photorefractive keratectomy (PRK) and a new procedure called laser assisted in situ keratomileusis, or laser intrastroma keratomileusis (LASIK), has been performed by lasers in the ultraviolet (UV) wavelength of 193-213 nm. Commercial UV refractive lasers include ArF excimer lasers at 193 nm and other non-excimer, solid-state lasers, such as the one patented by the present inventor in 1992 (U.S. Pat. No. 5,144,630). Precise, stable corneal reshaping requires lasers with strong tissue absorption (or minimum penetration depth) such that the thermal damage zone is at a minimum (less than few microns). Furthermore, accuracy of the procedure of vision correction depends on the amount of tissue removed in each laser pulse, in the order of about 0.2 microns. Therefore, lasers at UV wavelengths between 193 and 213 nm and at the mid-infrared wavelengths between 2.8 and 3.2 microns are two attractive wavelength ranges which match the absorption peak of protein and water, respectively.
The above-described prior arts are however limited to the use of reshaping the corneal surface curvature for the correction of myopia and hyperopia. A variation of farsightedness that the existing laser surgery procedures will not treat is presbyopia, and the gradual age related condition of suddenly fuzzy print and the necessity of reading glasses. When a person reaches a certain age (around 40), the eyes start to lose their capability to focus sharply for near vision. Presbyopia is not due to the cornea but comes about as the lens loses its ability to accommodate or focus sharply for near vision as a result of loss of elasticity that is inevitable as people age.
Thermal lasers such as Ho:YAG have been proposed for the correction of hyperopia by laser-induced coagulation of the corneal. The present inventor has also proposed the use of a laser-generated bifocal for the treatment of presbyopic patients but fundamental issues caused by age of presbyopic patients still remains unsolved in those prior approaches.
To treat presbyopic patients, or the reversal of presbyopia, using the concept of expanding the sclera by mechanical devices has been proposed by Schaker in U.S. Pat. Nos. 5,529,076, 5,722,952, 5,465,737 and 5,354,331. These mechanical approaches have the drawbacks of complexity and are time consuming, costly and have potential side effects. To treat presbyopia, the Schaker U.S. Pat. Nos. 5,529,076 and 5,722,952 propose the use of heat or radiation on the corneal epithelium to arrest the growth of the crystalline lens and also propose the use of lasers to ablate portions of the thickness of the sclera. However, these prior arts do not present any details or practical methods or laser parameters for the presbyopic corrections. No clinical studies have been practiced to show the effectiveness of the proposed concepts. The concepts proposed in the Schaker patents regarding lasers suitable for expanding the sclera tissues were incorrect in that the proposed lasers did not identify those which are “cold lasers” and can only conduct the tissue ablation rather than thermal burning of the cornea. Furthermore, the clinical issues, such as accuracy of the sclera tissue removal and potential tissue bleeding during the procedures, were not indicated in these prior patents. In addition, it is essential to use a scanning laser to achieve the desired ablation pattern and to control the ablation depth on the sclera tissue.
One objective of the present invention is to provide an apparatus and method to obviate these drawbacks in the above Schaker patents.
It is yet another objective of the present invention to provide an apparatus and method which provide the well-defined laser parameters for efficient and accurate sclera expansion for presbyopia reversal and the treatment and preventing of open angle glaucoma.
It is yet another objective of the present invention to use a scanning device such that the degree of ciliary muscle accommodation can be controlled by the location, size and shapes of the removed sclera tissue.
It is yet another objective of the present invention to define the non-thermal lasers for efficient tissue ablation and thermal lasers for tissue coagulation. This system is able to perform both in an ablation mode and in a coagulation mode for optimum clinical outcomes. It is yet another objective of the present invention to provide an integrated system in which dual-beam lasers can be scanned over the corneal surface for accurate ablation of the sclera tissue without bleeding, with ablation and coagulation laser beams simultaneously applied on the cornea.
It is yet another objective of the present invention to define the optimal laser parameters and the ablation patterns for best clinical outcome for presbyopia patients, where sclera expansion will increase the accommodation of the ciliary muscle.
It is yet another objective of the present invention to provide the appropriate scanning patterns which will cause effective sclera expansion.
The preferred embodiments of the present surgical laser consists of a combination of an ablative-type laser and a coagulative-type laser. The ablative-type laser has a wavelength range of from 0.15 to 0.35 microns and from 2.6 to 3.2 microns and is operated in a Q-switch mode such that the thermal damage of the corneal tissue is minimized. The coagulative-type lasers includes a thermal laser having a wavelength of between 0.45 and 0.9 microns and between 1.5 and 3.2 microns, and between 9 and 12 microns operated at a long-pulse or continuous-wave mode.
It is yet another preferred embodiment of the present invention to provide a scanning mechanism to effectively ablate the sclera tissue at a controlled depth by beam overlapping.
It is yet another preferred embodiments of the present invention to provide an apparatus and method such that both the ablative and the coagulative lasers can have applied to their beams the corneal surface to thereby prevent bleeding during the procedure.
It is yet another embodiment of the present invention to provide an integration system in which a coagulative laser may have the beam delivered by a scan or by a fiber-coupled device which can be manually scanned over the cornea. It is yet another embodiment of the present invention to focus the laser beams in a small circular spot or a line pattern.
It is yet another embodiment of the present invention to provide a coagulative laser to prevent the sclera tissue bleeding when a diamond knife is used for the incision of the sclera.
It is yet another embodiment of the present invention to use a metal mask on the corneal surface to generate a small slit when the laser is scanning over the mask. In this embodiment, the exact laser spot size and its propagating stability are not critical.
It is yet another embodiment of the present invention to provide an integration system in which the sclera expansion leads to the increase of the accommodation of the ciliary muscle for the treatment of presbyopia and the prevention of open angle glaucoma.
Further preferred embodiments of the present invention will become apparent from the description of the invention which follows.
Referring to FIG. 2 , an alternative schematic for the coagulative laser 6 is coupled to a fiber 11 for delivery of the beam to the cornea, where a line pattern may be performed by manually scanning the beam over the cornea. Alternatively, a fiber-coupled coagulation laser 6 may be focused by a cylinder lens to form a line spot on the cornea where a typical spot size of 0.2-2.0 mm×3.0-5.0 mm is preferred. In FIG. 2 , the ablative laser 1 has the same schematic as that of FIG. 1 where the laser beam 2 is coupled to the scanner 8 and reflected by the mirror 9 onto the cornea. An alternative embodiment of the present invention is to use a cylinder lens to focus the ablative laser 1 to a line spot with a size of 0.1-0.8 mm×3.0-5.0 mm on the corneal surface to eliminate the scanner 8. Another embodiment may use an optical fiber or an articulate arm to deliver both the coagulative and ablative laser beams such that the presbyopia treatment may be conducted manually without the need of a scanner or reflecting mirrors.
Another embodiment of controlling the ablation area of the sclera area is to use a metal mask which has a plurality of slits each having an approximate dimension of 0.1-0.3 mm×3.0-5.0 mm. Both of the ablative and coagulative lasers will scan over the mask which is placed on the corneal surface to generate the desired slit pattern on the sclera. In this embodiment using a mask, the small laser spot sizes of 0.1 mm, which may be difficult to achieve, are not needed in order to generate the slit size on the cornea. Laser spot sizes of 0.2-1.0 mm will generate the desired ablation dimension on the sclera after scanning over the mask. Furthermore, the embodiment of using a mask will not require a precise stability of the laser beam path onto the corneal surface. Without using a mask, both the exact laser beam spot size and its stability in propagating would be essential.
Another embodiment of sclera expansion of the present invention is to use diamond knife for the incision of the sclera tissue in the patterns described in FIGS. 4A , 4B and 4C where the coagulation laser is simultaneously applied onto the cut tissue to prevent bleeding. The incision depth should be about 80% to 90% of the sclera thickness in order to achieve the effects of sclera expansion. Accordingly, the pre-operative measurement of the sclera thickness is essential for the knife incision procedure and surgeon's skill is more important than that of using an ablative laser, in which the ablation depth of the sclera tissue is well controlled by the numbers of scanning lines in a given pattern. We are able to calibrate the ablation rate of various lasers on the sclera tissue by comparing the clinical data and that of the selected materials including a PMMA plastic sheet.
The invention having now been fully described, it should be understood that it may be embodied in other specific forms or variations without departing from the spirit or essential characteristics of the present invention. Accordingly, the embodiments described herein are to be considered to be illustrative and not restrictive.
Claims (23)
1. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera comprising the steps of:
selecting a pulsed ablation laser having a pulsed output beam of predetermined wavelength;
selecting a beam spot controller mechanism for reducing and focusing said selected ablative laser's output beam onto a predetermined spot size on the surface of the cornea eye;
selecting a scanning mechanism for scanning said ablative laser output beam;
coupling said ablative laser beam to a scanning device for scanning said ablative laser over a predetermined area of the corneal sclera; and
controlling said scanning mechanism to deliver said ablative laser beam in a predetermined pattern in said predetermined area onto the surface of the cornea eye to photoablate the sclera tissue outside the limbus to a depth of 80-90% of the thickness of the scleral tissue, whereby a presbyopic patient's vision is corrected by expansion of the sclera.
2. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which the step of selecting a pulsed ablation laser includes selecting a pulsed ablative laser having a predetermined wavelength between 0.15-0.32 microns.
3. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which the step of selecting a pulsed ablation laser includes selecting a pulsed ablative laser having a wavelength between 2.6 and 3.2 microns.
4. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which the step of selecting a pulsed ablation laser includes selecting a solid state laser.
5. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which the step of selecting a pulsed ablation laser includes selecting a pulsed gas laser having a pulse duration shorter than 200 nanoseconds.
6. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which said the step of selecting a beam spot controller includes selecting a pulsed ablative laser having a focusing lens with focal length of between 10 and 100 cm selected to obtain a predetermined laser beam spot size having a diameter of between 0.1 and 0.8 mm on the corneal eye surface.
7. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which the step of selecting a beam spot controller includes selecting a beam spot controller having a focusing lens with cylinder focal length of between 10 and 100 cm to obtain a laser beam spot having a line size of about 0.1-0.8 mm×3-5 mm on the corneal eye surface.
8. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which the step of selecting a scanning mechanism includes selecting a scanning mechanism having a pair of reflecting mirrors mounted to a galvanometer scanning mechanism for controlling said laser output beam into a predetermined pattern.
9. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by an ablating laser beam in accordance with claim 1 in which said ablative laser is delivered to the surface of the cornea eye by an optical fiber.
10. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which the step of selecting a scanning mechanism includes selecting a hand-held optical fiber coupled to the ablation laser for scanning said laser output beam into a predetermined pattern.
11. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which the predetermined pattern is generated by the steps of:
selecting a metal mask having at least one slit therein; and
positioning the selected mask over the cornea eye surface for scanning the ablation laser thereover for controlling the ablation slit pattern on the sclera tissue outside the limbus.
12. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which said predetermined pattern includes at least 3 radial lines around the area of the cornea outside the limbus.
13. A laser beam ophthalmological surgery method for treating presbyopic presbyopia in a patient's eye by ablating the sclera in accordance with claim 1 in which said predetermined pattern includes a ring pattern around the area of the cornea outside the limbus.
14. A method of improving accommodation and/or treating presbyopia, comprising:
cutting at least three spaced apart, substantially radial lines in the scleral tissue of a patient's eye outside the limbus to a depth of 80-90 % of the thickness of the scleral tissue.
15. A method as in claim 14 wherein the lines are non-intersecting.
16. A method as in claim 14 wherein the step of cutting is performed using a pulsed laser.
17. A method as in claim 16 wherein the laser has a spot size of 0.1 mm to 0.8 mm.
18. A method as in claim 14 wherein the step of cutting is performed using a laser having a wavelength of approximately 2.6-3.2 microns.
19. A method as in claim 14 wherein the step of cutting is performed using a laser having a wavelength of about 308 nanometers.
20. A method as in claim 14 wherein the step of cutting is performed using a laser having a wavelength of about 193 nanometers.
21. A method as in claim 14 wherein the step of cutting is performed using a laser having an average power of about 30 mW to 3 W.
22. A method as in claim 14 wherein the step of cutting includes cutting 8 lines in the sclera.
23. A method as in claim 14 wherein the step of cutting includes using an optical fiber tip to deliver the laser beam to the sclera.
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US10/626,486 USRE40002E1 (en) | 1998-11-10 | 2003-07-24 | Treatment of presbyopia and other eye disorders using a scanning laser system |
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US09/189,609 US6263879B1 (en) | 1998-11-10 | 1998-11-10 | Treatment of presbyopia and other eye disorders using a scanning laser system |
US10/626,486 USRE40002E1 (en) | 1998-11-10 | 2003-07-24 | Treatment of presbyopia and other eye disorders using a scanning laser system |
US1395008A | 2008-01-14 | 2008-01-14 |
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US20070055220A1 (en) * | 2003-11-14 | 2007-03-08 | Jui-Teng Lin | Methods and systems for treating presbyopia via laser ablation |
US20070173795A1 (en) * | 2006-01-20 | 2007-07-26 | Frey Rudolph W | System and apparatus for treating the lens of an eye |
US20070185475A1 (en) * | 2006-01-20 | 2007-08-09 | Frey Rudolph W | System and method for providing the shaped structural weakening of the human lens with a laser |
US20100004643A1 (en) * | 2006-01-20 | 2010-01-07 | Frey Rudolph W | System and method for improving the accommodative amplitude and increasing the refractive power of the human lens with a laser |
US20100022995A1 (en) * | 2008-07-25 | 2010-01-28 | Frey Rudolph W | Method and system for removal and replacement of lens material from the lens of an eye |
US20100114079A1 (en) * | 1996-03-21 | 2010-05-06 | Second Sight Laser Technologies, Inc. | Lenticular refractive surgery of presbyopia, other refractive errors, and cataract retardation |
US20100292678A1 (en) * | 2006-01-20 | 2010-11-18 | Frey Rudolph W | System and method for providing laser shot patterns to the lens of an eye |
US20110022035A1 (en) * | 2009-07-24 | 2011-01-27 | Porter Gerrit N | Liquid holding interface device for ophthalmic laser procedures |
US20110022036A1 (en) * | 2009-07-24 | 2011-01-27 | Frey Rudolph W | System and method for performing ladar assisted procedures on the lens of an eye |
US20110160710A1 (en) * | 2009-07-24 | 2011-06-30 | Frey Rudolph W | Laser system and method for performing and sealing corneal incisions in the eye |
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US9889043B2 (en) | 2006-01-20 | 2018-02-13 | Lensar, Inc. | System and apparatus for delivering a laser beam to the lens of an eye |
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Citations (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4592065A (en) | 1982-06-25 | 1986-05-27 | Compagnie Industrielle Des Lasers Cilas Alcatel | Gas laser excited by a transverse electrical discharge triggered by photoionization |
US4755999A (en) | 1985-03-25 | 1988-07-05 | Macken John A | Laser apparatus utilizing a magnetically enhanced electrical discharge |
US4773414A (en) | 1983-11-17 | 1988-09-27 | Lri L.P. | Method of laser-sculpture of the optically used portion of the cornea |
US4846172A (en) | 1987-05-26 | 1989-07-11 | Berlin Michael S | Laser-delivery eye-treatment method |
US4907586A (en) * | 1988-03-31 | 1990-03-13 | Intelligent Surgical Lasers | Method for reshaping the eye |
US5019074A (en) | 1987-03-09 | 1991-05-28 | Summit Technology, Inc. | Laser reprofiling system employing an erodable mask |
US5102409A (en) | 1988-04-22 | 1992-04-07 | Balgorod Barry M | Method and apparatus for modification of corneal refractive properties |
US5108388A (en) | 1983-12-15 | 1992-04-28 | Visx, Incorporated | Laser surgery method |
US5144630A (en) | 1991-07-29 | 1992-09-01 | Jtt International, Inc. | Multiwavelength solid state laser using frequency conversion techniques |
US5152760A (en) | 1989-03-17 | 1992-10-06 | The General Hospital Corporation | Non-invasive sclerostomy |
US5163934A (en) | 1987-08-05 | 1992-11-17 | Visx, Incorporated | Photorefractive keratectomy |
US5354331A (en) | 1992-07-15 | 1994-10-11 | Schachar Ronald A | Treatment of presbyopia and other eye disorders |
US5423801A (en) | 1986-03-19 | 1995-06-13 | Summit Technology, Inc. | Laser corneal surgery |
US5465737A (en) | 1992-07-15 | 1995-11-14 | Schachar; Ronald A. | Treatment of presbyopia and other eye disorders |
US5484432A (en) | 1985-09-27 | 1996-01-16 | Laser Biotech, Inc. | Collagen treatment apparatus |
US5490849A (en) * | 1990-07-13 | 1996-02-13 | Smith; Robert F. | Uniform-radiation caustic surface for photoablation |
US5520679A (en) | 1992-12-03 | 1996-05-28 | Lasersight, Inc. | Ophthalmic surgery method using non-contact scanning laser |
US5533997A (en) * | 1994-06-29 | 1996-07-09 | Ruiz; Luis A. | Apparatus and method for performing presbyopia corrective surgery |
US5549598A (en) | 1995-05-22 | 1996-08-27 | O'donnell, Jr.; Francis E. | Glaucoma laser trabeculodissection |
US5599341A (en) | 1994-06-15 | 1997-02-04 | Keravision, Inc. | Laser surgical procedure and device for treatment of the cornea |
US5630810A (en) | 1994-05-06 | 1997-05-20 | Machat; Jeffery J. | Method of ophthalmological surgery |
US5738676A (en) | 1995-01-03 | 1998-04-14 | Hammer; Daniel X. | Laser surgical probe for use in intraocular surgery |
US5741247A (en) | 1995-08-31 | 1998-04-21 | Biolase Technology, Inc. | Atomized fluid particles for electromagnetically induced cutting |
US5782822A (en) | 1995-10-27 | 1998-07-21 | Ir Vision, Inc. | Method and apparatus for removing corneal tissue with infrared laser radiation |
US5803923A (en) | 1994-09-15 | 1998-09-08 | Jugvir I. Singh-Derewa | Presbyopia correction using a protected space pattern, methods and apparatus |
WO1998041177A1 (en) | 1997-03-14 | 1998-09-24 | Irvision, Inc. | Short pulse mid-infrared parametric generator for surgery |
US5845024A (en) | 1994-09-16 | 1998-12-01 | Namiki Precision Jewel Co., Ltd. | Optical fiber with lens and method of manufacturing the same |
US5891131A (en) | 1993-02-01 | 1999-04-06 | Arizona Board Of Regents | Method and apparatus for automated simulation and design of corneal refractive procedures |
US5928129A (en) | 1994-06-29 | 1999-07-27 | Ruiz; Luis Antonio | Apparatus and method for performing presbyopia corrective surgery |
US5984916A (en) | 1993-04-20 | 1999-11-16 | Lai; Shui T. | Ophthalmic surgical laser and method |
US5997529A (en) | 1996-10-28 | 1999-12-07 | Lasersight Technologies, Inc. | Compound astigmatic myopia or hyperopia correction by laser ablation |
US6010497A (en) | 1998-01-07 | 2000-01-04 | Lasersight Technologies, Inc. | Method and apparatus for controlling scanning of an ablating laser beam |
US6019754A (en) | 1998-10-29 | 2000-02-01 | Kawesch; Glenn | Method and apparatus for improving lasik flap adherence |
US6090100A (en) | 1992-10-01 | 2000-07-18 | Chiron Technolas Gmbh Ophthalmologische Systeme | Excimer laser system for correction of vision with reduced thermal effects |
US6090102A (en) | 1997-05-12 | 2000-07-18 | Irvision, Inc. | Short pulse mid-infrared laser source for surgery |
US6099522A (en) | 1989-02-06 | 2000-08-08 | Visx Inc. | Automated laser workstation for high precision surgical and industrial interventions |
US6132424A (en) | 1998-03-13 | 2000-10-17 | Lasersight Technologies Inc. | Smooth and uniform laser ablation apparatus and method |
US6156030A (en) | 1997-06-04 | 2000-12-05 | Y-Beam Technologies, Inc. | Method and apparatus for high precision variable rate material removal and modification |
US6161546A (en) | 1995-07-17 | 2000-12-19 | Quardrivium, L.L.C. | System for altering tissue beneath an outer layer of tissue |
US6171336B1 (en) | 1996-03-26 | 2001-01-09 | Mark R. Sawusch | Method, implant, and apparatus for refractive keratoplasty |
US6190374B1 (en) | 1996-11-29 | 2001-02-20 | Nidek Co., Ltd. | Apparatus for operating upon a cornea |
US6197018B1 (en) | 1996-08-12 | 2001-03-06 | O'donnell, Jr. Francis E. | Laser method for restoring accommodative potential |
US6197056B1 (en) | 1992-07-15 | 2001-03-06 | Ras Holding Corp. | Segmented scleral band for treatment of presbyopia and other eye disorders |
US6203538B1 (en) | 1995-11-03 | 2001-03-20 | Gholam A. Peyman | Intrastromal corneal modification |
US6210401B1 (en) | 1991-08-02 | 2001-04-03 | Shui T. Lai | Method of, and apparatus for, surgery of the cornea |
US6258082B1 (en) | 1999-05-03 | 2001-07-10 | J. T. Lin | Refractive surgery and presbyopia correction using infrared and ultraviolet lasers |
US6263879B1 (en) | 1998-11-10 | 2001-07-24 | J. T. Lin | Treatment of presbyopia and other eye disorders using a scanning laser system |
US6280435B1 (en) | 1998-03-04 | 2001-08-28 | Visx, Incorporated | Method and systems for laser treatment of presbyopia using offset imaging |
US20010029363A1 (en) | 1999-05-03 | 2001-10-11 | Lin J. T. | Methods and apparatus for presbyopia correction using ultraviolet and infrared lasers |
US6364871B1 (en) | 1996-10-21 | 2002-04-02 | Apollo Vision, Inc. | Method and device for sculpturing laser beams |
US20030220630A1 (en) | 2001-03-30 | 2003-11-27 | Jui-Teng Lin | Methods and systems for treating presbyopia via laser ablation |
US6745775B2 (en) | 1998-11-10 | 2004-06-08 | Surgilight, Inc. | Methods and apparatus for presbyopia treatment using a scanning laser system |
US6824540B1 (en) | 2000-11-06 | 2004-11-30 | Surgilight, Inc. | Apparatus and methods for the treatment of presbyopia using fiber-coupled-lasers |
-
2003
- 2003-07-24 US US10/626,486 patent/USRE40002E1/en not_active Expired - Fee Related
Patent Citations (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4592065A (en) | 1982-06-25 | 1986-05-27 | Compagnie Industrielle Des Lasers Cilas Alcatel | Gas laser excited by a transverse electrical discharge triggered by photoionization |
US4773414A (en) | 1983-11-17 | 1988-09-27 | Lri L.P. | Method of laser-sculpture of the optically used portion of the cornea |
US5108388A (en) | 1983-12-15 | 1992-04-28 | Visx, Incorporated | Laser surgery method |
US5108388B1 (en) | 1983-12-15 | 2000-09-19 | Visx Inc | Laser surgery method |
US4755999A (en) | 1985-03-25 | 1988-07-05 | Macken John A | Laser apparatus utilizing a magnetically enhanced electrical discharge |
US5484432A (en) | 1985-09-27 | 1996-01-16 | Laser Biotech, Inc. | Collagen treatment apparatus |
US5423801A (en) | 1986-03-19 | 1995-06-13 | Summit Technology, Inc. | Laser corneal surgery |
US5019074A (en) | 1987-03-09 | 1991-05-28 | Summit Technology, Inc. | Laser reprofiling system employing an erodable mask |
US4846172A (en) | 1987-05-26 | 1989-07-11 | Berlin Michael S | Laser-delivery eye-treatment method |
US5163934A (en) | 1987-08-05 | 1992-11-17 | Visx, Incorporated | Photorefractive keratectomy |
US4907586A (en) * | 1988-03-31 | 1990-03-13 | Intelligent Surgical Lasers | Method for reshaping the eye |
US5102409A (en) | 1988-04-22 | 1992-04-07 | Balgorod Barry M | Method and apparatus for modification of corneal refractive properties |
US6099522A (en) | 1989-02-06 | 2000-08-08 | Visx Inc. | Automated laser workstation for high precision surgical and industrial interventions |
US5152760A (en) | 1989-03-17 | 1992-10-06 | The General Hospital Corporation | Non-invasive sclerostomy |
US5490849A (en) * | 1990-07-13 | 1996-02-13 | Smith; Robert F. | Uniform-radiation caustic surface for photoablation |
US5144630A (en) | 1991-07-29 | 1992-09-01 | Jtt International, Inc. | Multiwavelength solid state laser using frequency conversion techniques |
US6210401B1 (en) | 1991-08-02 | 2001-04-03 | Shui T. Lai | Method of, and apparatus for, surgery of the cornea |
US5529076A (en) | 1992-07-15 | 1996-06-25 | Schachar; Ronald A. | Treatment of presbyopia and other eye disorders |
US5354331A (en) | 1992-07-15 | 1994-10-11 | Schachar Ronald A | Treatment of presbyopia and other eye disorders |
US5722952A (en) | 1992-07-15 | 1998-03-03 | Schachar; Ronald A. | Treatment of presbyopia and other eye disorders |
US6197056B1 (en) | 1992-07-15 | 2001-03-06 | Ras Holding Corp. | Segmented scleral band for treatment of presbyopia and other eye disorders |
US5465737A (en) | 1992-07-15 | 1995-11-14 | Schachar; Ronald A. | Treatment of presbyopia and other eye disorders |
US6090100A (en) | 1992-10-01 | 2000-07-18 | Chiron Technolas Gmbh Ophthalmologische Systeme | Excimer laser system for correction of vision with reduced thermal effects |
US5520679A (en) | 1992-12-03 | 1996-05-28 | Lasersight, Inc. | Ophthalmic surgery method using non-contact scanning laser |
US5891131A (en) | 1993-02-01 | 1999-04-06 | Arizona Board Of Regents | Method and apparatus for automated simulation and design of corneal refractive procedures |
US5984916A (en) | 1993-04-20 | 1999-11-16 | Lai; Shui T. | Ophthalmic surgical laser and method |
US5630810A (en) | 1994-05-06 | 1997-05-20 | Machat; Jeffery J. | Method of ophthalmological surgery |
US5599341A (en) | 1994-06-15 | 1997-02-04 | Keravision, Inc. | Laser surgical procedure and device for treatment of the cornea |
US5533997A (en) * | 1994-06-29 | 1996-07-09 | Ruiz; Luis A. | Apparatus and method for performing presbyopia corrective surgery |
US5928129A (en) | 1994-06-29 | 1999-07-27 | Ruiz; Luis Antonio | Apparatus and method for performing presbyopia corrective surgery |
US5803923A (en) | 1994-09-15 | 1998-09-08 | Jugvir I. Singh-Derewa | Presbyopia correction using a protected space pattern, methods and apparatus |
US5845024A (en) | 1994-09-16 | 1998-12-01 | Namiki Precision Jewel Co., Ltd. | Optical fiber with lens and method of manufacturing the same |
US5738676A (en) | 1995-01-03 | 1998-04-14 | Hammer; Daniel X. | Laser surgical probe for use in intraocular surgery |
US5549598A (en) | 1995-05-22 | 1996-08-27 | O'donnell, Jr.; Francis E. | Glaucoma laser trabeculodissection |
US6161546A (en) | 1995-07-17 | 2000-12-19 | Quardrivium, L.L.C. | System for altering tissue beneath an outer layer of tissue |
US5741247A (en) | 1995-08-31 | 1998-04-21 | Biolase Technology, Inc. | Atomized fluid particles for electromagnetically induced cutting |
US5782822A (en) | 1995-10-27 | 1998-07-21 | Ir Vision, Inc. | Method and apparatus for removing corneal tissue with infrared laser radiation |
US6203538B1 (en) | 1995-11-03 | 2001-03-20 | Gholam A. Peyman | Intrastromal corneal modification |
US6171336B1 (en) | 1996-03-26 | 2001-01-09 | Mark R. Sawusch | Method, implant, and apparatus for refractive keratoplasty |
US6197018B1 (en) | 1996-08-12 | 2001-03-06 | O'donnell, Jr. Francis E. | Laser method for restoring accommodative potential |
US6364871B1 (en) | 1996-10-21 | 2002-04-02 | Apollo Vision, Inc. | Method and device for sculpturing laser beams |
US5997529A (en) | 1996-10-28 | 1999-12-07 | Lasersight Technologies, Inc. | Compound astigmatic myopia or hyperopia correction by laser ablation |
US6190374B1 (en) | 1996-11-29 | 2001-02-20 | Nidek Co., Ltd. | Apparatus for operating upon a cornea |
WO1998041177A1 (en) | 1997-03-14 | 1998-09-24 | Irvision, Inc. | Short pulse mid-infrared parametric generator for surgery |
US6090102A (en) | 1997-05-12 | 2000-07-18 | Irvision, Inc. | Short pulse mid-infrared laser source for surgery |
US6156030A (en) | 1997-06-04 | 2000-12-05 | Y-Beam Technologies, Inc. | Method and apparatus for high precision variable rate material removal and modification |
US6010497A (en) | 1998-01-07 | 2000-01-04 | Lasersight Technologies, Inc. | Method and apparatus for controlling scanning of an ablating laser beam |
US6280435B1 (en) | 1998-03-04 | 2001-08-28 | Visx, Incorporated | Method and systems for laser treatment of presbyopia using offset imaging |
US6132424A (en) | 1998-03-13 | 2000-10-17 | Lasersight Technologies Inc. | Smooth and uniform laser ablation apparatus and method |
US6019754A (en) | 1998-10-29 | 2000-02-01 | Kawesch; Glenn | Method and apparatus for improving lasik flap adherence |
US6263879B1 (en) | 1998-11-10 | 2001-07-24 | J. T. Lin | Treatment of presbyopia and other eye disorders using a scanning laser system |
US6745775B2 (en) | 1998-11-10 | 2004-06-08 | Surgilight, Inc. | Methods and apparatus for presbyopia treatment using a scanning laser system |
US20010029363A1 (en) | 1999-05-03 | 2001-10-11 | Lin J. T. | Methods and apparatus for presbyopia correction using ultraviolet and infrared lasers |
US6258082B1 (en) | 1999-05-03 | 2001-07-10 | J. T. Lin | Refractive surgery and presbyopia correction using infrared and ultraviolet lasers |
US6824540B1 (en) | 2000-11-06 | 2004-11-30 | Surgilight, Inc. | Apparatus and methods for the treatment of presbyopia using fiber-coupled-lasers |
US20030220630A1 (en) | 2001-03-30 | 2003-11-27 | Jui-Teng Lin | Methods and systems for treating presbyopia via laser ablation |
Non-Patent Citations (2)
Title |
---|
Sher, Surgery for Hyperopia and Presbyopia, Oct. 1997, Williams & Wilkens, First Edition, 33-36. * |
Thornton, Spencer P., Anterior Ciliary Sclerotomy (ACS), A Procedure to Reverse Presbyopia, in "Surgery for Hyperopia and Presbyopia", Oct. 1997, pp. 33-36 (chapter 4), published by Williams & Wilkins. |
Cited By (34)
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US20100114079A1 (en) * | 1996-03-21 | 2010-05-06 | Second Sight Laser Technologies, Inc. | Lenticular refractive surgery of presbyopia, other refractive errors, and cataract retardation |
USRE46493E1 (en) * | 2000-06-01 | 2017-08-01 | The General Hospital Corporation | Selective photocoagulation |
US20070055220A1 (en) * | 2003-11-14 | 2007-03-08 | Jui-Teng Lin | Methods and systems for treating presbyopia via laser ablation |
US20100292678A1 (en) * | 2006-01-20 | 2010-11-18 | Frey Rudolph W | System and method for providing laser shot patterns to the lens of an eye |
US9889043B2 (en) | 2006-01-20 | 2018-02-13 | Lensar, Inc. | System and apparatus for delivering a laser beam to the lens of an eye |
US20070173795A1 (en) * | 2006-01-20 | 2007-07-26 | Frey Rudolph W | System and apparatus for treating the lens of an eye |
US9180051B2 (en) | 2006-01-20 | 2015-11-10 | Lensar Inc. | System and apparatus for treating the lens of an eye |
US20070185475A1 (en) * | 2006-01-20 | 2007-08-09 | Frey Rudolph W | System and method for providing the shaped structural weakening of the human lens with a laser |
US8262646B2 (en) | 2006-01-20 | 2012-09-11 | Lensar, Inc. | System and method for providing the shaped structural weakening of the human lens with a laser |
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US20070173794A1 (en) * | 2006-01-20 | 2007-07-26 | Frey Rudolph W | System and method for treating the structure of the human lens with a laser |
US9545338B2 (en) | 2006-01-20 | 2017-01-17 | Lensar, Llc. | System and method for improving the accommodative amplitude and increasing the refractive power of the human lens with a laser |
US9375349B2 (en) | 2006-01-20 | 2016-06-28 | Lensar, Llc | System and method for providing laser shot patterns to the lens of an eye |
US8708491B2 (en) | 2008-07-25 | 2014-04-29 | Lensar, Inc. | Method and system for measuring an eye |
US20100042079A1 (en) * | 2008-07-25 | 2010-02-18 | Frey Rudolph W | Method and System for Removal and Replacement of Lens Material fron the Lens of an Eye |
US20100022995A1 (en) * | 2008-07-25 | 2010-01-28 | Frey Rudolph W | Method and system for removal and replacement of lens material from the lens of an eye |
US8480659B2 (en) | 2008-07-25 | 2013-07-09 | Lensar, Inc. | Method and system for removal and replacement of lens material from the lens of an eye |
US8500723B2 (en) | 2008-07-25 | 2013-08-06 | Lensar, Inc. | Liquid filled index matching device for ophthalmic laser procedures |
US8465478B2 (en) | 2009-07-24 | 2013-06-18 | Lensar, Inc. | System and method for performing LADAR assisted procedures on the lens of an eye |
US20110160710A1 (en) * | 2009-07-24 | 2011-06-30 | Frey Rudolph W | Laser system and method for performing and sealing corneal incisions in the eye |
US20110022035A1 (en) * | 2009-07-24 | 2011-01-27 | Porter Gerrit N | Liquid holding interface device for ophthalmic laser procedures |
US8617146B2 (en) | 2009-07-24 | 2013-12-31 | Lensar, Inc. | Laser system and method for correction of induced astigmatism |
US20110022036A1 (en) * | 2009-07-24 | 2011-01-27 | Frey Rudolph W | System and method for performing ladar assisted procedures on the lens of an eye |
US8758332B2 (en) | 2009-07-24 | 2014-06-24 | Lensar, Inc. | Laser system and method for performing and sealing corneal incisions in the eye |
US20110166557A1 (en) * | 2009-07-24 | 2011-07-07 | Naranjo-Tackman Ramon | Laser system and method for astigmatic corrections in asssociation with cataract treatment |
US8382745B2 (en) | 2009-07-24 | 2013-02-26 | Lensar, Inc. | Laser system and method for astigmatic corrections in association with cataract treatment |
US20110190740A1 (en) * | 2010-02-01 | 2011-08-04 | Lensar, Inc. | Placido ring measurement of astigmatism axis and laser marking of astigmatism axis |
US8556425B2 (en) | 2010-02-01 | 2013-10-15 | Lensar, Inc. | Purkinjie image-based alignment of suction ring in ophthalmic applications |
US8801186B2 (en) | 2010-10-15 | 2014-08-12 | Lensar, Inc. | System and method of scan controlled illumination of structures within an eye |
USD694890S1 (en) | 2010-10-15 | 2013-12-03 | Lensar, Inc. | Laser system for treatment of the eye |
USD695408S1 (en) | 2010-10-15 | 2013-12-10 | Lensar, Inc. | Laser system for treatment of the eye |
US10463541B2 (en) | 2011-03-25 | 2019-11-05 | Lensar, Inc. | System and method for correcting astigmatism using multiple paired arcuate laser generated corneal incisions |
CN114145908A (en) * | 2021-11-05 | 2022-03-08 | 华中科技大学 | Method and device for generating curved surface scanning surface by using focal line light spots |
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