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Topography-guided trans-PRK to correct long term effects of radial keratotomy

Poster Details

First Author: S. Giugno ITALY

Co Author(s):    V. Occhipinti                    

Abstract Details


To evaluate the efficacy of topography-guided trans-PRK in a group of patients with irregular refractive errors and irregular corneas after radial keratotomy.


Studio Oculistico, Dr. Salvatore Giugno, Viale Mario Gori 63, 93015 Niscemi (CL) Italy


Twenty-two eyes of 20 patients who had irregular astigmatism and corneal aberrations were recruited. All eyes had excimer laser topography-guided single-step transepithelial PRK. The efficacy, safety, predictability and corneal wavefront aberration changes were assessed 8 months after the surgery.


The patients age ranged from 43 to 69 years, there were 14 men and 6 women. At 6 months of follow-up, significant improvement was seen in mean keratometry measurements, corneal spherical aberrations, Trefoil, and COMA. No significant complication was observed.


Astigmatism, mean keratometry, corneal thickness, corneal spherical aberrations and the whole summary of aberration decreased. TG-TPRK with MMC is a good alternative for correcting post-RK cases with irregular astigmatism with elevated higher-order aberrations.

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