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US 4,759,762 AGranted
Accommodating lens
OwnerDennis T. Grendahlinventor
Life of this patent
Estimating the term…
Abstract
An accommodating lens including a lens optic with two indexes of refraction, the indexes of refraction based on dual cylindrical materials of the lens optic or a dual composite material of the lens optic. The dual cylindrical material or dual composite material of the lens optic is of PMMA. The lens can be either a posterior chamber lens or an anterior chamber lens, and include a plurality of outwardly extending loops.
Claims4
An intraocular lens comprising:
- a. an optic composed of two rigid, transparent elements having different indices of refraction which provide an aperture difference for increasing the depth of field of said optic, one element is the lens itself and the other element is a length of monofilament spirally wound on the surface of the lens to create an aperture;
- and,
- b. a plurality of loops extending outwardly from said optic.
A lens according to anyone of the preceding claims composed of PMMA.
Dependencies are inferred from the claim text.