Thin large-diameter optics foldable intraocular lens

Abstract

Foldable intraocular lens (IOL) having a total dioptric power and comprising an optic portion (12) having main anterior and posterior optical surfaces, and incorporating an internal optical feature (13) positioned between the main anterior and posterior optical surfaces are described. The optic portion has a diameter of greater than 6.0 mm and a maximum central cross-sectional area of less than 2 mm2 along the diameter, and the internal optical feature positively contributes to the total dioptric power of the intraocular lens. A method of forming the IOL may include: providing a foldable IOL having an optic portion comprising an optical, polymeric lens material and having an anterior surface and posterior surface and an optical axis intersecting the surfaces; and forming at least one laser-modified layer disposed between the anterior surface and the posterior surface with light pulses from a laser by scanning the light pulses along regions of the optical, polymeric material to cause changes in the refractive index of the polymeric lens material; wherein the laser-modified layer forms the internal optical feature that positively contributes to the total dioptric power of the IOL. A method of inserting the IOL into an eye may include folding the IOL, making an incision of less than 3.0 mm length, and inserting the folded IOL through the incision.

Dependencies are inferred from the claim text.