Corneal color change device with wide fitting latitude

Details Corneal color change device with wide fitting latitude Corneal color change device with wide fitting latitude

1985-10-07

1988-02-16

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

424429, G02C 704, A61K 922

Patent

active

047251336

ABSTRACT:
A soft flexible corneal device having a diameter smaller than the cornea and a central open pupil aperture substantially the size of the pupil of the eye. The device has a concave surface radius shorter than the convex corneal radius. The concave device center of curvature is positioned to allow the inner pupil device edge and the peripheral outer device edge to both be tangent to the corneal surface. The convex surface of the device has a radius of curvature shorter than the concave surface and is also tangent to both the inner pupil edge and the outer peripheral device edge. When placed on the cornea the concave surface of the soft flexible device assumes the convex curvature of the cornea.

REFERENCES:
patent: 4157864 (1979-06-01), Koller et al.
patent: 4615593 (1986-10-01), Neefe

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