Methods of obtaining ophthalmic lenses providing the eye with reduced aberrations

Abstract

The present invention discloses methods of obtaining ophthalmic lens capable of reducing the aberrations of the eye comprising the steps of characterizing at least one corneal surface as a mathematical model, calculating the resulting aberrations of said corneal surface(s) by employing said mathematical model, selecting the optical power of the intraocular lens. From this information, an ophthalmic lens is modeled so a wavefront arriving from an optical system comprising said lens and corneal model obtains reduced aberrations in the eye. Also disclosed are ophthalmic lenses as obtained by the methods which are capable reducing aberrations of the eye.

1 . A method of performing visual correction in a patient by implanting an intraocular lens, comprising: 
 (i) determining a spherical aberration of a cornea of an eye by measuring at least one surface of the cornea;    (ii) modeling an intraocular lens having an aspheric surface comprising a radius and a conic constant; and    (iii) based on the spherical aberration, selecting the radius and the conic constant to at least partially compensate for the spherical aberration.    
     
     
         2 . The method of  claim 1 , further comprising characterizing the at least one surface as a mathematical model and using the measurement to determine the spherical aberration.  
     
     
         3 . The method of  claim 1 , wherein modeling of the intraocular lens comprises selecting of at least one lens parameter of the intraocular lens, the at least one lens parameter including at least one of an anterior radius, an anterior shape, a posterior radius, a posterior shape, a lens thickness, and a refractive index.  
     
     
         4 . The method of  claim 3 , wherein at least one of the shapes deviates from a sphere.  
     
     
         5 . The method of  claim 1 , wherein the cornea is a model cornea of a model eye.  
     
     
         6 . The method of  claim 5 , wherein the model cornea is produced by measuring the corneas of a population.  
     
     
         7 . The method of  claim 6 , wherein the spherical aberration is an average corneal spherical aberration of the population.  
     
     
         8 . The method of  claim 6 , wherein the population includes people of a specific age group, people with a cataract, people who have received a corneal ablative procedure, people who are candidates for a corneal ablative procedure, and/or people who are highly myopic or highly hyperopic.  
     
     
         9 . The method of  claim 1 , wherein measuring at least one surface of the cornea comprises characterizing at least a front corneal surface of an individual by means of a topographical measurement.  
     
     
         10 . A method of performing visual correction in a patient by implanting an intraocular lens, comprising: 
 (i) determining an aberration of a cornea of an eye by measuring a surface of the cornea;    (ii) modeling an intraocular lens; and    (iii) based on the aberration of the cornea, selecting a spherical aberration of the intraocular lens to at least partially compensate for the aberration of the cornea.    
     
     
         11 . The method of  claim 10 , wherein selecting the spherical aberration of the intraocular lens comprises selecting a conic constant of at least one surface of the intraocular lens.  
     
     
         12 . The method of  claim 10 , wherein modeling of the intraocular lens comprises selecting of at least one lens parameter of the intraocular lens, the at least one lens parameter including at least one of an anterior radius, an anterior shape, a posterior radius, a posterior shape, a lens thickness, and a refractive index.  
     
     
         13 . The method of  claim 12 , wherein at least one of the shapes deviates from a sphere.  
     
     
         14 . The method of  claim 10 , wherein the cornea is a model cornea of a model eye.  
     
     
         15 . The method of  claim 14 , wherein the model cornea is produced by measuring the corneas of a population.  
     
     
         16 . The method of  claim 15 , wherein the aberration of the cornea is an average corneal aberration of the population.  
     
     
         17 . The method of  claim 15 , wherein the population includes people of a specific age group, people with a cataract, people who have received a corneal ablative procedure, people who are candidates for a corneal ablative procedure, and/or people who are highly myopic or highly hyperopic.  
     
     
         18 . The method of  claim 10 , further comprising selecting the spherical aberration of the intraocular lens to reduce the aberration of the cornea.  
     
     
         19 . The method of  claim 10 , wherein measuring at least one surface of the cornea comprises characterizing at least a front corneal surface of an individual by means of a topographical measurement.  
     
     
         20 . A method of performing visual correction in a patient by implanting an intraocular lens, comprising: 
 (i) determining a spherical aberration of a cornea of an individual patient;    (ii) based on the aberration of the cornea, providing an individualized lens that is tailored for the individual, the lens comprising a spherical aberration to reduce the spherical aberration of the cornea.    
     
     
         21 . The method of  claim 20 , wherein determining the spherical aberration of the cornea comprises measuring at least one surface of the cornea.  
     
     
         22 . The method of  claim 20 , further comprising performing a wavefront analysis of an aphakic eye.  
     
     
         23 . The method of  claim 20 , wherein the spherical aberration of individualized lens balances the spherical aberration of the cornea.