Amsterdam 2013 Programme Satellite Meetings Registration Exhibition Virtual Exhibition Hotels Visa Letter Invitation
Search Abstracts by author or title
(results will display both Free Papers & Poster)

Myopic astigmatism correction: comparison of a toric implantable collamer lens and a bioptics technique by an adaptive optics visual simulator

Poster Details

First Author: L.Belda-Salmerón SPAIN

Co Author(s):    C. Pérez-Vives   D. Madrid-Costa   T. Ferrer-Blasco   R. Montés-Micó     

Abstract Details



Purpose:

To compare the optical and visual quality of a simulated Toric Implantable Collamer Lens (TICL) and a bioptics technique to treat high myopic astigmatism.

Setting:

University of Valencia

Methods:

An adaptive optics visual simulator was used to simulate the vision after TICL implantation and a bioptics procedure from the wavefront aberration pattern for moderate and high-myopic astigmatism. Visual acuity (VA) at different contrasts and contrast sensitivity (CS) at 10, 20 and 25 cycles degree(-1) were measured for 3 and 5-mm pupils. Modulation Transfer Function (MTF) and Point Spread Function (PSF) were calculated for a 5-mm pupil

Results:

At a 3-mm pupil we only found statistically significant differences in VA between the two simulated surgeries at low-contrast for moderate- and high-myopic astigmatism (p < 0.05). Statistically significant differences were found in CS at 3-mm pupil between both procedures at the highest spatial frequency for moderate-myopic astigmatism and at all frequencies for high-myopic astigmatism (p < 0.05). At a 5-mm pupil we found statistically significant differences in VA and CS between both simulated surgeries at all contrasts and frequencies evaluated for both groups (p < 0.05). In all cases VA and CS were better with the TICL than with the bioptics technique. MTFs for the bioptics technique were worse than those computed for the TICL. The TICL showed less spread out of the PSF than the bioptics procedure.

Conclusions:

Simulated TICL and bioptics procedures provided good optical and visual quality, although TICL implantation provided slightly better outcomes than the bioptics procedure, especially when the pupil diameter was increased.

Financial Disclosure:

NONE

Back to previous