Method for designing, evaluating and optimizing ophthalmic lenses and laser vision correction

Abstract

The present invention relates generally to lens design and, more particularly, to a method for designing, evaluating and optimizing ophthalmic lenses and laser vision correction in order to optimally manage issues resulting from, or related to, halos.

1 . A method of designing an ophthalmic lens comprising the steps of:
 determining wavefront aberrations of a patient or group of patients;   calculating simulated retinal images of extended objects using the wavefront aberrations; and   optimizing the ophthalmic lens based on an assessment of the simulated retinal images.   
     
     
         2 . A method according to  claim 1 , wherein the extended objects represent a light source in a dark environment. 
     
     
         3 . A method according to  claim 2 , wherein the light source represents a headlight of a car. 
     
     
         4 . A method according to  claim 1 , in which the wavefront aberrations are based on corneal topography data. 
     
     
         5 . A method according to  claim 1 , wherein the assessment is based on a comparison of a simulated halo image with a (set of) reference halo(s). 
     
     
         6 . A method according to  claim 1 , wherein optimizing the ophthalmic lens is comprised of optimizing the IOL aberration profile. 
     
     
         7 . A method of designing an intraocular lens capable of reducing halos comprising the steps of:
 utilizing a model that characterizes a simulated halo image;   optimizing the design of the intraocular lens in order to reduce the halo image.   
     
     
         8 . A method according to  claim 7 , wherein the simulated halo image is calculated from corneal aberrations. 
     
     
         9 . A method according to  claim 8 , further comprising the step of comparing the simulated halo image with a reference halo. 
     
     
         10 . A method according to  claim 7 , wherein optimizing the design is comprised of optimizing the IOL aberration profile. 
     
     
         11 . A method of reducing halos associated with intraocular lenses comprising the steps of:
 utilizing a model that characterizes a simulated halo image;   optimizing laser vision correction so as minimize the halo.   
     
     
         12 . A method according to  claim 11 , wherein the simulated halo image is calculated from corneal aberrations. 
     
     
         13 . A method according to  claim 12 , further comprising the step of comparing the simulated halo image with a (set of) reference halo(s). 
     
     
         14 . An intraocular lens comprising:
 an anterior surface and an opposing posterior surface, wherein at least one of the surfaces of the ophthalmic lens is characterized by a phase profile configured to modify the wavefront aberration in order to shape the halo and intensity profile in order to minimize bother from the halo.   
     
     
         15 . The intraocular lens of  claim 14 , wherein the phase profile modifies spherical aberration. 
     
     
         16 . The intraocular lens of  claim 14 , wherein the phase profile modifies coma. 
     
     
         17 . The intraocular lens of  claim 14 , wherein the phase profile modifies trefoil. 
     
     
         18 . The intraocular lens of  claim 14 , wherein the phase profile modifies the product of astigmatism and coma.