发明名称 |
Method of laser-sculpture of the optically used portion of the cornea |
摘要 |
The invention contemplates removal of epithelium-layer material from the anterior surface of the cornea, as a step preparatory to laser surgery, wherein controlled ultraviolet irradiation of the cornea is operative to surgically ablate corneal tissue within an epithelium-free area which is in the optically used central region of the cornea; the control is such (1) as first to effect essentially uniform-depth removal of Bowman's membrane to the extent of exposing only stroma tissue within said central region, and then (2) to so selectively distribute the ultraviolet radiation to then-exposed stroma tissue as to effect in stroma tissue a predetermined sculpted corrective-curvature change in the optically used region. Other important pre-surgury and post-surgery procedural steps are disclosed, for greater assurance of a predictable curvature change through the sculpting laser surgery.
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申请公布号 |
US4773414(A) |
申请公布日期 |
1988.09.27 |
申请号 |
US19870059617 |
申请日期 |
1987.06.08 |
申请人 |
LRI L.P. |
发明人 |
L'ESPERANCE, JR., FRANCIS A. |
分类号 |
A61B17/30;A61B18/20;A61F9/008;A61F9/009;A61F9/01;B23K26/08;(IPC1-7):A61F9/00 |
主分类号 |
A61B17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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