Multiple focus corneal contact lens and method for treating myop

Details Multiple focus corneal contact lens and method for treating myop Multiple focus corneal contact lens and method for treating myop

1993-01-26

1994-09-20

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351160R, 351160H, G02C 704

Patent

active

053493958

ABSTRACT:
A multiple focus corneal contact lens for use in treating myopia by controlled corneal molding. The lens includes an asymmetric central zone which provides multiple focusing capability to correct both near and far vision. The tear zone is located concentrically around the central zone. The tear zone is integral with the central zone and has a radius of curvature which is smaller than the central zone. The lens also includes a peripheral zone located concentrically around the tear zone wherein the peripheral zone has a radius of curvature equal to or greater than the central zone.

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patent: 4765728 (1988-08-01), Porat et al.
patent: 4952045 (1990-08-01), Stoyan
patent: 4976534 (1990-12-01), Miege et al.
patent: 5024515 (1991-06-01), Seidner
Barr, J. T.: "Aspheric Update 1988, Part I", Spectrum, Nov. 1988, pp. 56-60.

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