Amitava Gupta,Nicholas Wooder,Ronald D. Blum,Rudy Mazzocchi,Urban Schnell
申请号：
US13701432
公开号：
US20130261744A1
申请日:
2011.05.31
申请国别(地区):
US
年份:
2013
代理人:
摘要：
Implantable ophthalmic devices with aspheric lenses and dynamic electro-active elements offer excellent depth of field and image quality while providing high optical throughput. An exemplary implantable ophthalmic device includes an aspheric lens with a negative spherical aberration that varies with radius. The aspheric lens can have peak optical powers at its geometric centers surrounded by a region of varying optical power (with varying slope) that extends radially from its center. When implanted, these aspheric lenses provide an incremental optical power that varies as a function of pupil diameter, which changes with object distance, for viewing far, intermediate, and near objects. The aspheric lens may also bonded or integrally formed with a spherical lens that provides fixed optical power for viewing far objects and/or a dynamic electro-active element that with two or more states (e.g., on and off) for increasing the effective optical power when viewing near objects.
