Intraocular lens combinations

Abstract

Intraocular lens combinations are provided which include an axially movable primary intraocular lens (IOL) and a substantially fixed compensating IOL. In certain embodiments, the compensating IOL has no corrective power and serves only to inhibit or reduce the risk of posterior capsular opacification (PCO). In other embodiments, the primary IOL has higher corrective power than required by the patient's prescription in order to amplify the accommodation obtained from axial movement, and the compensating IOL has negative corrective power to compensate for the excessive diopter value of the primary IOL. In a preferred method, the primary IOL is implanted in the capsular bag of an eye, and centered about the optical axis. The compensating IOL is then implanted in the capsular bag, sulcus, or anterior chamber and axially aligned with the primary IOL. If desired, refractive measurements may be made between insertion of the primary IOL and insertion of the compensating IOL to improve refractive accuracy and outcomes.

1 . An intraocular lens combination configured for implantation into the eye of a patient, the combination comprising: 
 a primary intraocular lens having a positive optical power and configured to be disposed in the capsular bag of an eye, the primary intraocular lens comprising a primary optic body curved about a first central axis; and    a compensating intraocular lens having a negative optical power and configured to be disposed in the anterior chamber of the eye, the compensating intraocular lens comprising a compensating optic body curved about a second central axis and a fixation member for securing the compensating optic body within the eye; and    a movement assembly adapted to cooperate with the eye to effect accommodating movement of the primary intraocular lens in the eye sufficient to produce an add power of about 1.75 to as high as 3.5 diopters.    
     
     
         2 . The combination according to  claim 1 , wherein the primary intraocular lens and the compensating intraocular lens are configured to facilitate alignment of the first and second central axes with an optical axis of the eye.  
     
     
         3 . The combination according to  claim 1 , wherein: 
 the primary optic body has a first body diameter; and    the compensating optic body has a second body diameter substantially equal to the first body diameter.    
     
     
         4 . The combination according to  claim 1 , wherein: 
 the patient has a basic prescription for far vision correction; and    the first optical power combines with the negative optical power to provide a net positive optical power corresponding to the patient's basic prescription.    
     
     
         5 . The combination according to  claim 4 , wherein: 
 the patient has a full add power prescription for near vision correction;    the movement assembly is adapted to cooperate with the eye to move the primary optic body a distance corresponding to a diopter shift less than what is required by the patient's full add power prescription; and    the first optical power is selected to amplify the diopter shift sufficiently to obtain substantially full add power.    
     
     
         6 . The combination according to  claim 1 , wherein: 
 the patient has a full add power prescription for near vision correction;    the movement assembly is adapted to cooperate with the eye to move the primary optic body a distance corresponding to a diopter shift less than what is required by the patient's full add power prescription; and    the first optical power is selected to amplify the diopter shift sufficiently to obtain substantially full add power.    
     
     
         7 . The combination according to  claim 1 , wherein the movement assembly is adapted to move the primary optic body axially within the eye.  
     
     
         8 . The combination according to  claim 7 , wherein the movement assembly is configured to provide at least about 0.5 mm of axial movement.  
     
     
         9 . The combination of claim  39 , wherein the movement assembly is configured to provide at least about 0.75 mm of axial movement.  
     
     
         10 . The combination of claim  39 , wherein the movement assembly is configured to provide about 1 mm to about 1.2 mm of axial movement.  
     
     
         11 . The combination according to  claim 1 , wherein the compensating optic body is located anteriorly of the primary optic body.  
     
     
         12 . The combination according to  claim 1 , wherein the combination is configured for implantation into an eye having a capsular bag, and wherein the primary optic body is positioned in the capsular bag.  
     
     
         13 . The combination according to  claim 12 , wherein the fixation member are configured to maintain the compensating optic body in a substantially fixed axial position relative the capsular bag.  
     
     
         14 . An intraocular lens combination configured for implantation into the eye of a patient, the combination comprising: 
 a primary intraocular lens having a positive optical power and configured to be disposed in the capsular bag of an eye, the primary intraocular lens comprising a primary optic body curved about a first central axis; and    a compensating intraocular lens having a negative optical power and configured to be disposed in the anterior chamber of the eye, the compensating intraocular lens comprising a compensating optic body curved about a second central axis and a fixation member for securing the compensating optic body within the eye; and    a movement assembly adapted to cooperate with the eye to effect accommodating movement of the primary intraocular lens in the eye, the intraocular lens combination is configured to provide a full add power prescription for near vision correction.    
     
     
         15 . The combination according to  claim 14 , wherein the intraocular lens combination configured to produce an add power of about 1.75 to as high as 3.5 diopters.  
     
     
         16 . The combination according to  claim 14 , wherein the primary intraocular lens and the compensating intraocular lens are configured to facilitate alignment of the first and second central axes with an optical axis of the eye.  
     
     
         17 . An intraocular lens combination configured for implantation into the eye of a patient, the combination comprising: 
 a primary intraocular lens having a positive optical power and configured to be disposed in the capsular bag of an eye, the primary intraocular lens comprising a primary optic body curved about a first central axis; and    a compensating intraocular lens having a negative optical power and configured to be disposed in the anterior chamber of the eye, the compensating intraocular lens comprising a compensating optic body curved about a second central axis and a fixation member for securing the compensating optic body within the eye; and    a movement assembly adapted to cooperate with the eye to effect accommodating movement of the primary intraocular lens in the eye, the intraocular lens combination configured to provide a diopter shift in a range consistent with near vision prescription of a typical presbyopic patient.    
     
     
         18 . The combination according to  claim 17 , wherein the intraocular lens combination is configured to provide a full add power prescription for near vision correction.  
     
     
         19 . The combination according to  claim 17 , wherein the intraocular lens combination configured to produce an add power of about 1.75 to as high as 3.5 diopters.  
     
     
         20 . The combination according to  claim 17 , wherein the primary intraocular lens and the compensating intraocular lens are configured to facilitate alignment of the first and second central axes with an optical axis of the eye.