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ACCOMODATING INTRAOCULAR LENS
专利权人:
ALCON INC
发明人:
WENSRICH DOUG
申请号:
ZA201102246
公开号:
ZA201102246B
申请日:
2011.03.25
申请国别(地区):
ZA
年份:
2012
代理人:
摘要:
An improved multifocal design for an ocular implant is provided. This ocular implant can include an accommodating intraocular lens (IOL) and a number of haptics. The accommodating IOL includes a liquid suspended between two optically transparent plates or membranes to form a pressure lens that passes optical energy. The haptics mechanically couple to the IOL in order to position and secure the IOL within the eye. The IOL achieves accommodation by using the eye's ciliary muscles to vary the surface curvature of the liquid. The liquid may have a high surface tension and be surrounded by phobic liquid. Pressure from the ciliary muscles causes fluid to be added from or withdrawn to a reservoir. Increasing/decreasing the internal pressure of the liquid changes the angle (curvature) of the surface thus changing the optical properties of the lens. When the pressure is released the liquid returns to the reservoir. The whole system may be sealed off from the interior of the eye by a membrane/transparent lens.
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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