Two spectacle lenses for aphakia.
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.
D001036:Aphakia, Postcataract; D005139:Eyeglasses; D006801:Humans; D055095:Optics and Photonics; D010330:Patents as Topic