The control system is programmable by the user by inserting a preprogrammed key into the system console. The key changes the default values normally used by the control system to those values selected by a particular surgeon. The control console thus emulates the performance characteristics of a wide...http://www.google.com.au/patents/US5455766?utm_source=gb-gplus-sharePatent US5455766 - Control system for ophthalmic surgical instruments
