公开(公告)号：US20070296916A1

公开(公告)日：2007-12-27

申请号：US11758441

申请日：2007-06-05

申请人： Brien Holden ,  Arthur Ho ,  Padmaja Sankaridurg ,  Thomas Aller ,  Earl Smith

发明人： Brien Holden ,  Arthur Ho ,  Padmaja Sankaridurg ,  Thomas Aller ,  Earl Smith

IPC分类号： G02C7/04

CPC分类号： G02C7/044 ,  G02C7/04 ,  G02C7/042 ,  G02C7/061 ,  G02C2202/24

摘要： A contact lens (10) for use in controlling or retarding the progression of myopia in an eye has a central optical zone (20) approximating the normal diameter of the pupil of the eye (22) that gives clear central vision at distance for the wearer. An annular peripheral optical zone 24 that is substantially outside the diameter of the pupil is formed around the central optical zone (20) with greater refractive power than that of the central zone (22) so that oblique rays entering the eye through the peripheral optical zone (24) will be brought to focus at a focal plane that is substantially on or anterior to the peripheral region of the retina. Preferably, the rear surface (16) of the lens is shaped to conform to the cornea of the eye and the front surface (18) of the lens (10) is shaped to provide—in conjunction with the rear surface (16)—the desired optical properties of the central and peripheral optical zones. The front surface (18) is also preferably contoured to form a smooth transition (30) between the junction of the central optical zone (20) and the peripheral optical zone (24), with or without designed optical properties such as progressive power.

摘要翻译： 用于控制或延缓眼睛近视进展的隐形眼镜（10）具有近似于眼睛（22）的瞳孔的正常直径的中心光学区域（20），其为佩戴者提供距离的清晰的中心视觉 。 基本上位于瞳孔直径外侧的环形周边光学区域24围绕中心光学区域（20）以比中心区域（22）更大的折光力形成，使得通过外围光学区域进入眼睛的斜射线 （24）将被聚焦在基本上在视网膜周边区域的前方或前方的焦平面上。 优选地，透镜的后表面（16）成形为符合眼睛的角膜，并且透镜（10）的前表面（18）成形为与后表面（16）一起提供 - 中心和周边光学区域的所需光学特性。 前表面（18）还优选成形为在中心光学区（20）和周边光学区（24）的接合处之间形成平滑过渡（30），具有或不具有设计的光学特性（例如渐进屈光力）。