Contact lens with improved interior surface

Details Contact lens with improved interior surface Contact lens with improved interior surface

1978-09-25

1980-03-18

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 704

Patent

active

041936728

ABSTRACT:
A contact lens has an improved interior surface which includes an optical zone and peripheral zone. The optical zone has a radius of curvature similar to that of the cornea of the eye to be fitted. The peripheral zone defines an arc which is substantially tangent to the optical zone at its edge and which intersects the curved line defined by the selected diameter of the lens at the selected sagittal depth. The lens can be formed from a hard or flexible material and can be made by a lathe turning or by molding.

REFERENCES:
patent: Re29229 (1977-05-01), Girard et al.
patent: 3187338 (1965-06-01), Neefe

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