Posters

Transepithelial photorefractive keratectomy in treatment of mild and moderate myopia: six months results

Poster Details

First Author: S.Kaya Unsal TURKEY

Co Author(s):    F. Helvacioglu   E. Sunay   O. Kavalcioglu              

Abstract Details

Purpose:

To assess the efficacy, predictability, and stability of Transepithelial Photo-Refractive Keratectomy (TransPRK) in virgin eyes with pre-operative best corrected visual acuities (BCVA) of 20/20.

Setting:

Veni Vidi Eye Surgery Group Istanbul, Turkey

Methods:

This is a retrospective, non-randomized, and single arm study evaluating the outcomes of TransPRK in mild and moderate myopia. The study included 42 mild, and 26 moderate myopic eyes and they were followed for six months post-operatively. The treatments were carried out with Amaris 1050 RS (SCHWIND eye-tech-solutions) excimer laser device. The refractive, topographic and corneal wavefront outcomes were analysed. Pre- and post-operative visual acuities, refractions, and corneal high order aberrations (HOA) were analyzed at 6 months post-operatively.

Results:

The mean pre-operative sphere, cylinder, and spherical equivalent (SE) refractions in mild myopia were -1.74±0.71 diopters (D), -1.29±1.15 D and -2.38±0.63 D respectively. At the sixth month, the values were -0.26±0.40, -0.31±0.31 and -0.42±0.38 D with the same order (p < 0.001). In the moderate myopic patients, the mean pre-operative sphere, cylinder, and spherical equivalent (SE) values were -4.17±0.89, -1.19±1.66 and -4.76±1.42 D respectively. At the sixth month, the values were -0.22±0.74, -0.43±0.50 and -0.43±0.82 D respectively (p < 0.001). At the sixth month after TransPRK, the manifest spherical equivalent (SE) refractions were not significantly different in the mild and the moderate myopic groups (p < 0.001). In the sixth month post-operatively, 96% of the eyes had an UCVA of 20/20 or better. The CDVA was not significantly different in the mild and the moderate myopic groups (p > 0.001). Pre- and post-operative mean K values in mild myopia were 43.66±1.20, 41.74 ±1.28 D respectively (p < 0.001), and 44.10±2.07, 40.22±2.26 D in moderate myopia respectively (p < 0.001).

Conclusions:

The study demonstrated good efficacy, predictability, and stability in mild and moderate myopic eyes that underwent TransPRK with a follow-up period of six months.

Financial Disclosure:

None