A drugless eye examination system is disclosed that incorporates: an opti system for illuminating the retina of an eye, which has preferably been previously dilated by standard dark room or other drugless procedures, with infrared energy; another optical system for projecting a tiny red spot light on...http://www.google.com/patents/US4208107?utm_source=gb-gplus-sharePatent US4208107 - Drugless eye examination system
