Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1976-10-28
1979-12-25
Clark, Conrad J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
260 296TA, 526273, G02C 704, C08L 0000
Patent
active
041803086
ABSTRACT:
This invention concerns a minus prescription hydrogel contact lens that permits oxygen diffusion to the cornea in sufficient quantity to avoid the effects of oxygen deprivation; avoids the physiological complications arising from damage to the bulbar conjunctivia due to compression of the limbal capillaries; and avoids corneal scleral or wetting deficiencies. These advantages are accomplished through a combination of lens design and hydrogel properties.
REFERENCES:
patent: 3985697 (1976-10-01), Urbach
Knoll, H. A., Progress Report on Softlens Contact Lenses, reprinted from a speech given at Ohio State University, 9/27/68.
Korb Donald R.
Mancini William L.
Refojo Miguel F.
Clark Conrad J.
Goldberg Robert L.
Neuner George W.
Syntex (USA) Inc.
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