首页>
外国专利>
A tuned fresnel lens for multifocal intraocular applications including small incision surgeries
A tuned fresnel lens for multifocal intraocular applications including small incision surgeries
展开▼
机译:适用于包括小切口手术在内的多焦点眼内应用的调谐菲涅耳透镜
展开▼
页面导航
摘要
著录项
相似文献
摘要
Vision correcting lenses utilizing the principles of both Fresnel lenses and Fresnel zone plates are disclosed. The lenses of the present invention provide multifocal vision correction, and are most preferably used to provide intraocular lenses for small incision surgeries. Using the concept of a "tuned" Fresnel lens, intraocular and other types of vision correcting lenses are provided by the present invention which overcome the limitations found in typical Fresnel lenses by phase synchronizing the light passing through the lens. As disclosed, the groove width and depth of the lens may be varied to provide the synchronization, and also to provide multifocal vision. Also, the design of the present invention permits a relatively thin lens to be designed, therefore making it particularly applicable to small incision surgeries since it may be rolled or folded into a configuration which is easily inserted into an incision in the eye. IMAGE
展开▼