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LENTILLE INTRAOCULAIRE MULTIFOCALE
专利权人:
ABBOTT MEDICAL OPTICS INC.
发明人:
ZHAO, HUAWEI
申请号:
CA2741174
公开号:
CA2741174C
申请日:
2009.10.20
申请国别(地区):
CA
年份:
2018
代理人:
摘要:
The invention provides an IOL, a method of making the IOL, and a method ofusing the IOL, wherein the IOLincludes a central region and an outer region. An ophthalmic lens comprises acentral region and an outer region, the central regionis disposed about an optical axis and comprises a dif~ractive pattern havingan add power, the central region also has a first powerand a second power for visible light, the first power is a power for far focusand the second power equals to the sum of the powerfor far focus and the add power, the outer region encloses the central regionand generally has no multifocal diffractive power. Atleast a portion of the outer region has a curvature that varies with distancefrom the optical axis, the outer region may include aperipheral region and at least one intermediate region that encloses thecentral region, wherein the peripheral region encloses the atleast one intermediate region and the at least one intermediate regionprovides at least one intermediate power that is differentfrom the first power and the second power.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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