Contact lens

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G - Physics

02

C

88/40

G02C 7/04 (2006.01) A61K 9/20 (2006.01) G02B 1/04 (2006.01)

Patent

CA 1099546

ABSTRACT OF THE DISCLOSURE 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 capil- laries; and avoids corneal scleral or wetting deficiences. These advantages are accomplished through a combination of lens design and hydrogel properties.

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