OPTIMAL IOL SHAPE FACTORS FOR HUMAN EYES

摘要

The present invention provides an ophthalmic lens (e.g., an intraocular lens) (10) having an optic (12) with an anterior surface and a posterior surface (16) , which exhibits a shape factor (defined as a ratio of the sum of the anterior and posterior curvatures to the difference of such curvatures) in a range of about -0.5 to about 4. In a related aspect, the shape factor of the optic lies in a range of about 0 to about 2. The above shape factors give rise to a plurality of different lens shapes, such as concave-convex, plano-convex and plano-concave .