Stabilization of contact lenses

Abstract

Contact lens designs are provided with improved stabilization wherein the moments of momentum are balanced.

1 . A contact lens designed with improved stabilization relative to a nominal stabilized design wherein the moments of momentum are balanced. 
     
     
         2 . The contact lens of  claim 1  wherein a stabilization zone has the bulk of its length lying beneath the horizontal axis of the lens. 
     
     
         3 . The contact lens of  claim 1  wherein a stabilization zone has a differing rate of change of slope (from its peak) in one direction relative to the other 
     
     
         4 . The contact lens of  claim 1  wherein a stabilization zone has a different height profile above the horizontal axis than it does below the horizontal axis 
     
     
         5 . The contact lens of  claim 1  wherein the distance from the lens center to a point along the contour of maximum thickness of a stabilization zone is different from the distance from the lens center to another point along the contour of maximum thickness of the same stabilization zone. 
     
     
         6 . The contact lens of  claim 1  wherein the distance from the lens edge along a meridan to a point along the contour of maximum thickness of a stabilization zone is not the same as the distance from the lens edge along a meridan to another point along the contour of maximum thickness of the same stabilization zone.