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Intrastromal Surgery Correcting Low Order and High Order Aberrations of the Eye
专利权人:
Shui T. Lai
发明人:
Shui T. Lai
申请号:
US15967315
公开号:
US20180344151A1
申请日:
2018.04.30
申请国别(地区):
US
年份:
2018
代理人:
摘要:
A method of correcting wavefront aberrations of an eye includes determining a high precision conventional intrastromal corneal ablation profile based on a direct removal of the intrastromal corneal tissue. An expanded ablation volume profile is constructed based on the direct tissue removal profile and the expanded tissue volume is to be ablated instead to correct to the wavefront aberrations. The thickness of the ablated profile of a conventional ablation profile is expanded by an expansion factor (Nc−1)/(Nm−Nc), Nc is the index of refraction of the cornea and Nm the index of fill material. An expanded ablation volume filled with the fill material produces the effect of correcting wavefront aberrations as if a much smaller tissue volume were ablated without the fill material.
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