Induced Aperture Lens and Method

Abstract

Disclosed are lenses and methods for verifying a lens with an induced aperture. The lenses can have a geometry that, among other things, maintains a centered position about a wearer's eye to prevent more than a permissible amount of movement of the lens relative to the eye. Further disclosed is a method for verifying the power profiles used with the lens, and a lens that can have a single power profile for a wide range of presbyopia.

1 - 32 . (canceled) 
     
     
         33 . A method of treating presbyopia comprising:
 obtaining at least two ophthalmic lens each having an apex area with distance vision correcting power and a power distribution creating a blurred region outside of the apex area so as to cause an induced aperture, a thickness profile having a center thickness of 100-120 microns and a peripheral thickness of 220-310 microns, a base curve between 7.9 mm and 8.5 mm, a lens diameter between 14.0 and 14.5 mm, and a power profile having an aperture inducing power rise between +2.00 to +2.75 diopters, wherein the lens is made of polymacon;   applying a first of the ophthalmic lenses to a first eye having a first prescription for presbyopia; and   applying a second of the ophthalmic lenses to a second eye having a second prescription for presbyopia different from the first prescription, wherein the first and second ophthalmic lenses have a same thickness profile, base curve, lens diameter, and aperture inducing power rise.   
     
     
         34 . The method of claim  1 , wherein the base curve is between 8.1 mm and 8.3 mm. 
     
     
         35 . The method of claim  1 , wherein the aperture inducing power rise is a front surface tangential power rise as determined at the 1.5 mm radius away from a center of the apex area. 
     
     
         36 . The method of claim  1 , wherein a sag of the lens is between about 3.7 mm to 4.75 mm. 
     
     
         37 . The method of claim  1 , wherein an edge thickness is 145 microns as measured at 0.3 mm in from an edge of the lens. 
     
     
         38 . The method of claim  1 , further comprising a scotopic ring outside of the apex area and blurred region. 
     
     
         39 . A method of treating presbyopia comprising:
 obtaining at least two ophthalmic lens each having an apex area with distance vision correcting power and a power distribution creating a blurred region outside of the apex area so as to cause an induced aperture, a thickness profile having a center thickness of 100-120 microns and a peripheral thickness of 220-310 microns, a base curve between 7.9 mm and 8.5 mm, a lens diameter between 14.0 and 14.5 mm, and a power profile having an aperture inducing power rise between +2.375 to +3.125 diopters, wherein the lens is made of etafilcon;   applying a first of the ophthalmic lenses to a first eye having a first prescription for presbyopia; and   applying a second of the ophthalmic lenses to a second eye having a second prescription for presbyopia different from the first prescription, wherein the first and second ophthalmic lenses have a same thickness profile, base curve, lens diameter, and aperture inducing power rise.   
     
     
         40 . The method of  claim 39 , wherein the base curve is between 8.1 mm and 8.3 mm. 
     
     
         41 . The method of  claim 39 , wherein the aperture inducing power rise is a front surface tangential power rise as determined at the 1.5 mm radius away from a center of the apex area. 
     
     
         42 . The method of  claim 39 , wherein a sag of the lens is between about 3.7 mm to 4.75 mm. 
     
     
         43 . The method of  claim 39 , wherein an edge thickness is 145 microns as measured at 0.3 mm in from an edge of the lens. 
     
     
         44 . The method of  claim 39 , further comprising a scotopic ring outside of the apex area and blurred region. 
     
     
         45 . A method of treating presbyopia comprising:
 obtaining at least two ophthalmic lens each having an apex area with distance vision correcting power and a power distribution creating a blurred region outside of the apex area so as to cause an induced aperture, a thickness profile having a center thickness of 100-120 microns and a peripheral thickness of 220-310 microns, a base curve between 7.9 mm and 8.5 mm, a lens diameter between 14.0 and 14.5 mm, and a power profile having an aperture inducing power rise between +2.00 to +3.25 diopters, wherein the lens is made of silicon hydrogel;   applying a first of the ophthalmic lenses to a first eye having a first prescription for presbyopia; and   applying a second of the ophthalmic lenses to a second eye having a second prescription for presbyopia different from the first prescription, wherein the first and second ophthalmic lenses have a same thickness profile, base curve, lens diameter, and aperture inducing power rise.   
     
     
         46 . The method of  claim 45 , wherein the base curve is between 8.1 mm and 8.3 mm. 
     
     
         47 . The method of  claim 45 , wherein the aperture inducing power rise is a front surface tangential power rise as determined at the 1.5 mm radius away from a center of the apex area. 
     
     
         48 . The method of  claim 45 , wherein a sag of the lens is between about 3.7 mm to 4.75 mm. 
     
     
         49 . The method of  claim 45 , wherein an edge thickness is 145 microns as measured at 0.3 mm in from an edge of the lens. 
     
     
         50 . The method of  claim 45 , further comprising a scotopic ring outside of the apex area and blurred region.