In vivo modification of refractive power of an intraocular...

Details In vivo modification of refractive power of an intraocular... In vivo modification of refractive power of an intraocular...

A - Human Necessities

61

F

A61F 2/16 (2006.01) B29D 11/00 (2006.01)

Patent

CA 2106809

Abstract of the Disclosure A method for changing the refractive power (spherical and astigmatical) of an intraocular implant of the type having a lens, either formed of a series of laminates of material, or having a lens that is coated with material, said material, when subject to laser energy providing for its expansion or contraction, and thereby varying the curvature of the lens, and hence, effecting an increase or decrease in its relative refractive index or power. The direction at which the laser energy is applied to the lens can effect the relative change in the refractive power of the lens. A modification provides haptics diametrically or concentrically extending from the optic lens, with a segment of material such as hydrogel or collagen at the juncture between the haptics and the lens, which when directionly exposed to laser energy, can cause an increase or decrease in the relative refractive power of the implanted lens.

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