USING THE LIGHT ADJUSTABLE LENS (LAL) TO INCREASE THE DEPTH OF FOCUS BY INDUCING TARGETED AMOUNTS OF ASPHERICITY

摘要

In general, the present invention relates to optical elements, which can be modified post-manufacture such that different versions of the element will have different optical properties. In particular, the present invention relates to lenses, such as intraocular lenses, which can be converted into aspheric lenses post-fabrication. Also, the present invention relates to a method for forming aspheric lenses post-fabrication.

主权项

1. A method of forming an aspheric lens by changing its shape, the method comprising:
providing a lens including:
a first polymer matrix; anda modifying composition,
dispersed in the first polymer matrix, andcapable of photoinduced polymerization; and irradiating the lens with a spatially defined irradiance profile described by
Profile(ρ)=SCN(ρ)+βAsph(ρ); wherein
ρ is a radial coordinate, β is a weighting factorSCN(ρ) is one of a spherical, spherocylindrical, and a power neutral spatial irradiance profile, andAsph(ρ) is an asphericity-inducing irradiance profile; in order to photoinduce polymerization in the modifying composition and thereby changing the shape of the lens into an aspheric lens.