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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



Purpose:

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

Setting:

University of Valencia

Methods:

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.

Results:

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).

Conclusions:

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

Financial Disclosure:

NONE

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