Method and apparatus for universal improvement of vision

摘要

An optical lens is disclosed. The optical lens has anterior and posterior surfaces and an optical center on its anterior surface. The anterior surface has an M-wave shape such that the surface curvature measured along a curve passing through the optical center varies substantially as a smoothed letter M in relationship to angular orientation about the optical center. 0 degrees angular orientation is substantially the point closest to the nose when the lens is worn and the central dip of the M occurs substantially at a point which is furthest from the nose when the lens is worn, corresponding to a 180 degree orientation, there being maxima of the M at substantially the uppermost and lowermost vertical extremes of the lens when it is worn, to 90 degree and 270 degree orientations, respectively. The surface curvature measured along a curve passing through the optical center is the surface curvature that is determined along a half meridian from a point on the perimeter of the cornea to a central point on the cornea.