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CONTACT LENS FOR KERATOCONUS
专利权人:
Jerome A. Legerton
发明人:
Jerome A. Legerton
申请号:
US13304246
公开号:
US20120105804A1
申请日:
2011.11.23
申请国别(地区):
US
年份:
2012
代理人:
摘要:
The present invention is directed to a non-deforming contact lens for keratoconus patients having a displaced central zone. In particular, the central zone is displaced from the geometric center of the lens. The shape of the central zone is egg or spoon-shaped and is rotationally asymmetrical with one semi-meridian that is shorter than a corresponding semi-meridian. An intermediate transition zone is formed integral with the periphery of the central zone, and a peripheral zone is formed integral with the periphery of the intermediate transition zone, forming a round contact lens.
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