An aspheric soft intraocular lens, having an optical power surface, which may have multiple radii portions or aspherical portions, as well as spherical portions, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction. Such an aspheric soft lens is molded...http://www.google.com.tw/patents/US7192444?utm_source=gb-gplus-share專利 US7192444 - Aspheric soft lens
