发明授权
US5002569A Intraocular lens 失效
人工晶状体

Intraocular lens
摘要:
An intraocular lens denoted as a YAG dimpled lens or dimpled YAG lens, which includes a barrier rim and a YAG spacer area in a posterior surface of the lens. The barrier rim is 2-4 mm in longitudinal length and the YAG spacer is 3-4 mm in longitudinal length across the surface diameter of an optic of the intraocular lens. The lens optic can be either plano-convex or bi-convex. A cutout for the dimpled YAG spacer is provided which is either a convave or a substantially rectangular geometrical configuration in the posterior surface of the lens. The YAG spacer can also include a trough or a groove geometrical configuration, such as in the configurations of a Maltese cross, a circular trough or groove, or a circular trough or groove with a Maltese cross therein. The barrier rim is 33% to 80% of the total surface are of the posterior surface of the lens.
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