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Optical and visual simulation of standard and modified spherical aberration ICL post myopic LASIK surgery

Poster Details

First Author: T.Ferrer-Blasco SPAIN

Co Author(s):    C. Pérez-Vives   A. Domínguez-Vicent   D. Monsálvez-Romín   R. Montés-Micó     

Abstract Details


To evaluate the visual quality achieved in patients submitted to standard or modified ICL to correct residual myopic error after LASIK surgery.


University of Valencia


The adaptive optics visual simulator was used to simulate LASIK surgery of moderate and high myopia with a myopic regression corrected by a standard and modified ICL. Visual acuity (VA) and contrast sensitivity (CS) were measured in fourteen subjects at 3- and 4.5-mm pupil. Point Spread Function and simulated retinal images were calculated.


Comparing LASIK plus standard ICL and LASIK plus modified ICL simulations, for moderate myopia, VA improvement was less than 1 line in all VA contrast and both pupils evaluated, except at low contrast at 4.5-mm pupil that it was higher. Not statistically significant differences were found in CS between both simulations at any spatial frequency evaluated and for 3-mm pupil (p>0.05), but it becomes significant at 4.5-mm pupil (p<0.05). For high myopia, the VA improvement was less than 1 line at 3-mm pupil, although it increased two or more lines at 4.5-mm pupil. Statistically significant differences were found in CS between both simulations for all spatial frequencies and both pupils evaluated (p<0.05), except, for low and medium spatial frequencies at 3-mm pupil (p>0.05).


These outcomes suggest that an ICL is a good option to correct the myopic residual error after myopic LASIK. When the ICL’s spherical aberration is modified, the post-LASIK eyes of high myopia are the most benefited, due to these eyes are more aberrated than after moderate myopic LASIK

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