Toric contact lenses

Details Toric contact lenses Toric contact lenses

1998-03-27

2000-09-05

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351160H, G02C 704

Patent

active

061132365

ABSTRACT:
A toric contact lens includes a posterior surface and an anterior surface, one of these surfaces including a toric optical zone, and these surfaces being shaped to form a ballast. A diameter of the posterior optical zone and a diameter of the anterior optical zone are selected to minimize thickness of the lens based on the cylindrical correction of the lens.

REFERENCES:
patent: 4508436 (1985-04-01), Sitterle
patent: 4573774 (1986-03-01), Sitterle
patent: 5455641 (1995-10-01), Hahne et al.
patent: 5601759 (1997-02-01), Apollonio
patent: 5611970 (1997-03-01), Apollonio et al.

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