Ophthalmic lenses useful in correcting astigmatism and presbyopia

Abstract

This invention includes an ophthalmic lens having a convex surface and an opposite concave surface where one of said surfaces contains alternating distance and near power zones where one or more distance zones have cylinder power.

What is claimed is:  
     
         1 . An ophthalmic lens comprising a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having distance spherical and cylinder optical power and  
 at least one concentric annular ring having optical power selected from one member of the group consisting of 
 (a) a distance spherical and cylinder optical power,  
 (b) a near optical power, and  
 (c) a distance spherical optical power.  
 
   
     
     
         2 . The ophthalmic lens of  claim 1  wherein the concave surface comprises a center zone and at least one concentric annular ring.  
     
     
         3 . The ophthalmic lens of  claim 2  wherein 
 said at least one annular ring comprises five annular rings, two of said five annular rings have distance spherical and cylinder optical power and three of said five annular rings have near optical power.  
 
     
     
         4 . The ophthalmic lens of  claim 2  wherein 
 said at least one annular ring comprises five annular rings, one of said five annular rings has distance spherical and cylinder optical power, one of said five annular rings has distance spherical power, and three of said five annular rings have near optical power.  
 
     
     
         5 . The ophthalmic lens of  claim 2  wherein 
 said at least one annular ring comprises five annular rings, two of said five annular rings have distance spherical optical power, and three of said five annular rings have near optical power.  
 
     
     
         6 . The ophthalmic lens of  claim 2  wherein 
 said at least one annular ring comprises four annular rings, two of said four annular rings have distance spherical and cylinder optical power and two of said four annular rings have near optical power.  
 
     
     
         7 . The ophthalmic lens of  claim 2  wherein 
 said at least one annular ring comprises four annular rings, one of said four annular rings has distance spherical and cylinder optical power, one of said four annular rings has distance spherical power, and two of said four annular rings have near optical power.  
 
     
     
         8 . The ophthalmic lens of  claim 2  wherein 
 said at least one annular ring comprises four annular rings, two of said four annular rings have distance spherical optical power, and two of said four annular rings have near optical power.  
 
     
     
         9 . The ophthalmic lens of  claim 1  wherein the ophthalmic lens is a contact lens.  
     
     
         10 . A method for correcting the vision of an astigmatic presbyope comprising the step of providing a pair of ophthalmic lenses where each ophthalmic lens comprises a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having distance spherical and cylinder optical power and  
 at least one concentric annular ring having optical power selected from one member of the group consisting of 
 (a) a distance spherical and cylinder optical power,  
 (b) a near optical power, and  
 (c) a distance spherical optical power.  
 
   
     
     
         11 . A method of designing a lens for the correction of astigmatic presbyopes comprising designing an ophthalmic lens comprising a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having distance spherical and cylinder optical power and  
 at least one concentric annular ring having optical power selected from one member of the group consisting of 
 (a) a distance spherical and cylinder optical power,  
 (b) a near optical power, and  
 (c) a distance spherical optical power.  
 
   
     
     
         12 . An ophthalmic lens comprising a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having distance spherical optical power and  
 at least one concentric annular ring having distance spherical and cylinder optical power.  
   
     
     
         13 . The ophthalmic lens of  claim 12  wherein 
 said at least one annular ring comprises five annular rings, two of said five annular rings have distance spherical and cylinder optical power and three of said five annular rings have near optical power.  
 
     
     
         14 . The ophthalmic lens of  claim 12  wherein 
 said at least one annular ring comprises four annular rings, two of said four annular rings have distance spherical and cylinder optical power and two of said four annular rings have near optical power.  
 
     
     
         15 . The ophthalmic lens of  claim 12  wherein 
 said at least one annular ring comprises four annular rings, one of said four annular rings has distance spherical and cylinder optical power, one of said four annular rings has distance spherical optical power, and two of said four annular rings have near optical power.  
 
     
     
         16 . The ophthalmic lens of  claim 12  wherein the ophthalmic lens is a contact lens.  
     
     
         17 . A method for correcting the vision of an astigmatic presbyope comprising the step of providing a pair of ophthalmic lenses where each ophthalmic lens comprises a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having distance spherical optical power and  
 at least one concentric annular ring having distance spherical and cylinder optical power.  
   
     
     
         18 . A method of designing a lens for the correction of astigmatic presbyopes comprising designing an ophthalmic lens comprising a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having distance spherical optical power and  
 at least one concentric annular ring having distance spherical and cylinder optical power.  
   
     
     
         19 . An ophthalmic lens comprising a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having near optical power and  
 at least one concentric annular ring having a distance spherical and cylinder optical power.  
   
     
     
         20 . The ophthalmic lens of  claim 19  wherein 
 said at least one annular ring comprises five annular rings, three of said five annular rings have distance spherical and cylinder optical power and two of said five annular rings have near optical power.  
 
     
     
         21 . The ophthalmic lens of  claim 19  wherein 
 said at least one annular ring comprises four annular rings, two of said four annular rings have distance spherical and cylinder optical power and two of said four annular rings have near optical power.  
 
     
     
         22 . The ophthalmic lens of  claim 19  wherein 
 said at least one annular ring comprises five annular rings, two of said five annular rings have distance spherical and cylinder optical power, one of said five annular rings has distance spherical optical power and two of said five annular rings have near optical power.  
 
     
     
         23 . The ophthalmic lens of  claim 12  wherein the ophthalmic lens is a contact lens.  
     
     
         24 . A method for correcting the vision of an astigmatic presbyope comprising the step of providing a pair of ophthalmic lenses where each ophthalmic lens comprises a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having near optical power and  
 at least one concentric annular ring having a distance spherical and cylinder optical power.  
   
     
     
         25 . A method of designing a lens for the correction of astigmatic presbyopes comprising designing an ophthalmic lens comprising a convex surface and a concave surface 
 wherein 
 one of said surfaces comprises a center zone having near optical power and  
 at least one concentric annular ring having a distance spherical and cylinder optical power.