Document Detail


Effects on visual function of approximations of the corneal-ablation profile during refractive surgery.
MedLine Citation:
PMID:  18357228     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We offer an analysis that shows that the approximations made for the ablation depth during practical refractive surgery, in which the square-root terms are replaced by the first two terms of the series expansion, can limit the visual function of the observer by reducing the modulation transfer function (MTF). To simulate the refractive-surgical operation, we considered two groups of myopic patients with different ametropia who were emmetropized with different ablation profiles. We made the MTF calculations by taking the spherical aberration into account. In addition, a fuller analysis showed that these approximations limit the possibility of considering surfaces that are aspherical for reshaping the anterior cornea to optimize the observer's visual function.
Authors:
J R Jiménez; R G Anera; L Jiménez Del Barco
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  40     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2001 May 
Date Detail:
Created Date:  2008-03-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2200-5     Citation Subset:  -    
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