CANOVAS VIDAL, CARMEN,WEEBER, HENDRIK A.,PIERS, PATRICIA ANN
申请号：
CA3056707
公开号：
CA3056707A1
申请日:
2018.03.16
申请国别(地区):
CA
年份:
2018
代理人:
摘要：
Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (lOLs). Exemplary diffractive intraocular implants (lOLs) can include a diffractive profile (100) having multiple diffractive zones. The diffractive zones can include a central zone (101) that includes one or more echelettes (102) and a peripheral zone (103) beyond the central zone having one or more peripheral echelettes (104). The central diffractive zone can work in a higher diffractive order than a remainder of the diffractive profile. The combination of the central and peripheral zones and an optional intermediate zone provides a longer depth of focus than a diffractive profile defined just by a peripheral and/or optional intermediate zone.
