Patent ID: 9594259
Date: 2017-03-14
CPC Classifications: A61F,G02C

Claim:
1. An ophthalmic lens for at least one of slowing, retarding or preventing myopia progression, the ophthalmic lens comprising: a first zone at the center of the ophthalmic lens; and at least one peripheral zone surrounding the center and having a dioptric power that is different than that at the center; and an opaque mask extending from the at least one peripheral zone, thereby providing a lens power profile having substantially equivalent foveal vision correction to a single vision lens, and having a depth of focus and reduced retinal image quality sensitivity that slows, retards, or prevents myopia progression, the opaque mask being described by wherein P represents the dioptric power (D); r represents a radial distance from a geometric lens center; SA represents an amount of spherical aberration; and P SEG (r) represents a step function that has a number of zones with different magnitudes.