Abstract

SA.05.05

Phototherapeutic keratektomy – efficacy and safety in the treatment of recurrent erosions

Mrukwa-Kominek E., Gierek-Lapinska A., Gierek-Ciaciura S.
Department of Ophthalmology, Silesian School of Medicine, Katowice, Poland

Objective: The aim of the study was to assess the efficacy and safety of PTK in the treatment of recurrent erosion syndrom.
Methods: We analyzed 43 eyes in 43 patients in whom PTK was performed due to recurrent erosion syndrom. In the analyzed group of patients there were 22 male and 21 female, aged from 16 to 82 (mean age 41.6±15.7). The causes of recurrent erosion syndrom were trauma (32) or idiopatic (11). PTK was made with corneal epithelium removing, the photoablation depth was 9 µm. We analyzed: changes in UCVA, BCVA, corneal topography, haze, rate of recurrences, subjective symptoms before and after the procedure, and the course of the healing process in confocal microscopy.
Results: The changes in mean BCVA after PTK (0.71±0.35) in comparison to before it (0.61±0.37) were not statistically significant. The changes in UCVA and corneal topography stabilized after 2 weeks. Only small hyperopic shift (0.46D±1.2D) was observed.
The mean of frequency of the recurrences before PTK, as observed, was 3,62 (from 2 to 6), after PTK 0,07 (from 0 to 1). As a complications: in 1 eye decentration, and in 1 eye irregular astigmatism, in 4 eyes epithelialization time longer than 7 days were observed.
Conclusions: PTK is a safe and effective method of treatment in cases of recurrent erosion syndrom. Healing processes observed after therapeutic photoablation did not differ from this occured after refractive photoablation.

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