Intraocular lens with noncircular eye engaging retention means

Details Intraocular lens with noncircular eye engaging retention means Intraocular lens with noncircular eye engaging retention means

1979-07-25

1981-03-10

Frinks, Ronald L.

A61F 116, A61F 124

Patent

active

042545110

ABSTRACT:
An intraocular lens with an iris retention loop that is attached to an optical section of the lens by a pair of shank sections. Each shank section has a noncircular cross sectional area to provide a more flattened contact surface for engaging an inner edge of the iris. Such structure reduces cutting of the iris when the iris is stretched over these shank sections to retain the lens in the eye.

REFERENCES:
patent: 3925825 (1975-12-01), Richards et al.
patent: 4012823 (1977-03-01), Richards
patent: 4077071 (1978-03-01), Freeman
patent: 4092743 (1978-06-01), Kelman
patent: 4104339 (1978-08-01), Fetz et al.
patent: 4168547 (1979-09-01), Konstantinov et al.
patent: 4173798 (1979-11-01), Welsh
patent: 4174543 (1979-11-01), Kelman
"The Weightless Intraocular Lens" by Richard C. Troutman, Ophthalmic Surgery, vol. 8, No. 3, Jun. 1977, pp. 153-155. _
"A Weightless Iseikonic Intraocular Lens" by Richard D. Binkhorst et al., American Journal of Ophthalmology, vol. 58, No. 1, Jul. 1964, pp. 73-78. _

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