Rotationally stable contact lens designs

Details Rotationally stable contact lens designs Rotationally stable contact lens designs

G - Physics

02

C

G02C 7/04 (2006.01)

Patent

CA 2175621

Non-ballasted, eyelid rotationally stabilized designs are disclosed for use in toric or multifocal toric contact lenses. The back surface of the lens includes a toric or multifocal toric surface and also thin top and bottom zones (slab offs) to achieve eyelid rotational orientation and stabilization. The advantage of this technical approach is in mold manufacturing, wherein the design allows the use of any chosen power spherical stock front mold.

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