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1. (WO2017149403) ADJUSTING THE APODIZATION PATTERN FOR DIFFRACTIVE IOLS

Pub. No.:    WO/2017/149403    International Application No.:    PCT/IB2017/050886
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Feb 17 00:59:59 CET 2017
IPC: A61F 2/16
G02B 5/18
Applicants: NOVARTIS AG
Inventors: MACKOOL, Richard
Title: ADJUSTING THE APODIZATION PATTERN FOR DIFFRACTIVE IOLS
Abstract:
An ophthalmic device including an ophthalmic lens (110) having anterior and posterior surfaces (114, 112) and at least one diffraction grating (120) is described. The diffraction grating(s) are on the anterior and/or posterior surface(s). The diffraction grating(s) include zones (122, 124, 126). A first zone is at a first distance range from a center of the lens. A second zone is at a second distance range further from the center than the first distance range. A repeat zone is at a third distance range further from the center than the second distance range. The first zone includes echelette(s) (130) having a first step height and a first radius of curvature. The second zone includes echelette(s) (130) having a second step height and a second radius of curvature. The repeat zone includes echelette(s) (130) having at least one of the first step height and the first radius of curvature.