CANOVAS VIDAL, CARMEN,ALARCON HEREDIA, AIXA,PIERS, PATRICIA ANN,WEEBER, HENDRIK A.
申请号：
CA3013857
公开号：
CA3013857A1
申请日:
2017.02.09
申请国别(地区):
CA
年份:
2017
代理人:
摘要：
Apparatuses, systems and methods for providing improved intraocular lenses (IOLs), include features for reducing side effects, such as halos, glare and best focus shifts, in multifocal refractive lenses and extended depth of focus lenses. Exemplary ophthalmic lenses can include a continuous, power progressive aspheric surface based on two or more merged optical zones, the aspheric surface being defined by a single aspheric equation. Continuous power progressive intraocular lenses can mitigate optical side effects that typically result from abrupt optical steps. Aspheric power progressive and aspheric extended depth of focus lenses can be combined with diffractive lens profiles to further enhance visual performance while minimizing dysphotopsia effects. The combination can provide an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile.
