Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1993-05-07
1995-09-19
Sugarman, Scott J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
359481, G02C 714, G02B 2500
Patent
active
054520304
ABSTRACT:
An apparatus for enabling a user having a visual handicap indicative of a condition designated as double vision to obtain substantially binocular vision comprises a first prism associated with the left eye of the user and having a base and a first prismatic deviation, a second prism having a base and a second prismatic deviation different from the first prismatic deviation, and a rotating assembly for rotating the prisms until a binocular vision field is viewable through the prisms by the user. The prismatic deviations are selected so that rotation of the prisms aligns them in a manner which permits the brain to fuse the respective images viewed by each eye into a single image, thereby providing a binocular image field. If desired, corrective lenses which accommodate the far or near distance prescriptions of the left and right eyes may mounted in alignment with the corresponding prisms.
REFERENCES:
patent: 1769295 (1930-07-01), Kenneback
patent: 4522474 (1985-06-01), Slavin
patent: 4779965 (1988-10-01), Beecher
patent: 5002383 (1991-03-01), Sisler
patent: 5104214 (1992-04-01), Sims
patent: 5204702 (1993-04-01), Shapiro
patent: 5302981 (1994-04-01), Wirtz
Designs for Vision Inc.
Sugarman Scott J.
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