Contact lens

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks

Patent

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Details

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.

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