Ophthalmic devices, system and methods that improve peripheral vision

Abstract

The present disclosure relates to devices, systems, and methods for improving or optimizing peripheral vision. In particular, methods are disclosed which include utilizing particular characteristics of the retina in improving or optimizing peripheral vision. Additionally, various IOL designs, as well as IOL implantation locations, are disclosed which improve or optimize peripheral vision.

What is claimed is: 
     
         1 . An intraocular lens configured to improve vision for a patient's eye, the intraocular lens comprising:
 an optic comprising a first surface and a second surface opposite the first surface, the first surface and the second surface intersected by an optical axis, the optic being symmetric about the optical axis, wherein the first or the second surface of the optic is aspheric,   wherein the optic is configured to focus light incident along a direction parallel to the optical axis at the fovea to produce a functional foveal image,   wherein the optic is configured to focus light incident on the patient's eye at an oblique angle with respect to the optical axis at a peripheral retinal location disposed at a distance from the fovea, the peripheral retinal location having an eccentricity between 1 and 30 degrees, and   wherein image quality at the peripheral retinal location is improved by reducing at least one optical aberration at the peripheral retinal location.   
     
     
         2 . The intraocular lens of  claim 1 , wherein the oblique angle is between about 1 degree and about 30 degrees. 
     
     
         3 . The intraocular lens of  claim 1 , wherein the foveal image has a modulation transfer function (MTF) of at least 0.5 at a spatial frequency of 100 cycles/mm for both the tangential and the sagittal foci in green light for a pupil size between 3-5 mm. 
     
     
         4 . The intraocular lens of  claim 1 , wherein an image formed at the peripheral retinal location has a figure of merit of at least 0.5, wherein the figure of merit is an average MTF for a range of spatial frequencies between 0 cycles/mm and 30 cycles/mm obtained at different eccentricities between 1 and 30 degrees. 
     
     
         5 . The intraocular lens of  claim 1 , wherein the at least one optical aberration is selected from the group consisting of defocus, peripheral astigmatism and coma. 
     
     
         6 . The intraocular lens of  claim 1 , wherein the first or the second surface comprises a plurality of optical features that are configured to reduce the at least one optical aberration. 
     
     
         7 . The intraocular lens of  claim 1 , wherein the optic is a meniscus lens with a vertex curving inwards from edges of the optic. 
     
     
         8 . The intraocular lens of  claim 1 , wherein the optic has a thickness between about 0.3 mm and about 2.0 mm. 
     
     
         9 . The intraocular lens of  claim 1 , further comprising a second optic separated from the optic by a distance. 
     
     
         10 . The intraocular lens of  claim 9 , wherein the distance between the optic and the second optic is fixed. 
     
     
         11 . The intraocular lens of  claim 9 , wherein the distance between the optic and the second optic is varied by application of ocular forces. 
     
     
         12 . The intraocular lens of  claim 9 , wherein the optic is disposed in the capsular bag of the patient's eye, and the second optic is disposed between the iris and the patient's eye. 
     
     
         13 . The intraocular lens of  claim 9 , wherein the optic and the second optic are both disposed in the capsular bag of the patient's eye. 
     
     
         14 . The intraocular lens of  claim 1 , wherein the optic is configured to improve image quality at the peripheral retinal location by adjusting a shape factor of the optic that reduces the at least one optical aberration. 
     
     
         15 . The intraocular lens of  claim 14 , wherein the shape factor of the optic is adjusted by adjusting a parameter of the optic, the parameter selected from the group consisting of a curvature of the first or the second surface, an axial position of the optic with respect to the retina and a thickness of the optic. 
     
     
         16 . A method of selecting an intraocular lens (IOL) configured to be implanted in a patient's eye, the method comprising:
 obtaining at least one physical or optical characteristic of the patient's eye using a diagnostic instrument; and   selecting an IOL having a shape factor that is configured to focus light incident along a direction parallel to the optical axis at the fovea to produce a functional foveal image and is configured to improve image quality at a peripheral retinal location disposed at a distance from the fovea by reducing at least one optical aberration at the peripheral retinal location, the peripheral retinal location having an eccentricity between 1 and 30 degrees, wherein the shape factor of the IOL is selected based on the at least one physical or optical characteristic of the patient's eye.   
     
     
         17 . The method of  claim 16 , wherein the shape factor of the IOL is adjusted based by adjusting a parameter of the optic, the parameter selected from the group consisting of a curvature of the first or the second surface, an axial position of the optic with respect to the retina and a thickness of the optic. 
     
     
         18 . The method of  claim 16 , wherein at least one surface of the IOL is aspheric. 
     
     
         19 . The intraocular lens of  claim 16 , wherein the foveal image has a modulation transfer function (MTF) of at least 0.5 at a spatial frequency of 100 cycles/mm for both the tangential and the sagittal foci in green light for a pupil size between 3-5 mm. 
     
     
         20 . The intraocular lens of  claim 16 , wherein an image formed at the peripheral retinal location has a figure of merit of at least 0.5, wherein the figure of merit is an average MTF for a range of spatial frequencies between 0 cycles/mm and 30 cycles/mm obtained at different eccentricities between 1 and 30 degrees.