This novel Head Mounted Display (HMD) has a removable communications unit which can be interchangeably worn on the right or left side of the user. Thus, users having a hearing deficiency in one ear can use the opposite ear. Also, the HMD has a fully adjustable eyepiece which can be swung out of...http://www.google.com.au/patents/US5844656?utm_source=gb-gplus-sharePatent US5844656 - Head mounted display with adjustment components
