초록 ▼

An optic for an intraocular lens with finished, molded radii on the anterior and posterior edges of the peripheral surface of the optic. The optic has a thin central optical zone and a surrounding annular ring having sufficient material to support haptics. The ring is thicker than the optical zone a

An optic for an intraocular lens with finished, molded radii on the anterior and posterior edges of the peripheral surface of the optic. The optic has a thin central optical zone and a surrounding annular ring having sufficient material to support haptics. The ring is thicker than the optical zone and, thus, recesses the posterior surface of the optical zone to provide a capsulotomy space. The present novel optic is produced by novel molding pins which are shaped to provide the finished molded radii on the edges of the optic so that the optic requires little or no post-molding finishing or polishing other than the degating and deflashing.

대표청구항 ▼

The process of molding a lightweight plastic optic for an intraocular lens comprising the steps of: (a) molding a generally circular optic having an anterior optical surface, a posterior optical surface, and a circumferential edge; (b) during the molding process, forming a smooth finished molded rad

The process of molding a lightweight plastic optic for an intraocular lens comprising the steps of: (a) molding a generally circular optic having an anterior optical surface, a posterior optical surface, and a circumferential edge; (b) during the molding process, forming a smooth finished molded radius, which requires only minimum subsequent finishing on the anterior and posterior circumferential edges of the optic; (c) leaving flash material attached to the circumferential edge of the optic only on portions spaced posterially of the anterior edge of said optic and anteriorly of the posterior edge of said optic; (d) degating said optic; and, (e) deflashing said flash material to provide a smooth blend from said circumferential edge of said optic to said finished molded anterior and posterior edges of the optic.