Two spectacle lenses for aphakia.

Abstract

Many different designs have been produced for aphakic power spectacle lenses. Two lenses are described which have a common design aim--to produce a lens of uncut diameter but reasonable cosmetic appearance and weight. These lenses both utilize a continuous aspheric surface on the front surface, which enables them to have a stabilized central power zone and a near plano peripheral flange, but without the disadvantages of the traditional lenticular construction.