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Refractive outcomes after PTK

Poster Details

First Author: S.Mitova BULGARIA

Co Author(s):                  

Abstract Details


The aim of this prospective study is to assess the visual results and patient satisfaction after PTK procedure


St. Petka Eye Clinic Varna, Bulgaria


We used Schwind Amaris Eximer Laser to perform standard PTK procedure. Vision was measured with Snellen chart and patient satisfaction was assessed with the help of a questionare.


The analysis included 29 eyes of 26 patients. 20 of them were with familial corneal dystrophy, 5 of them were with corneal irregularities after trauma, 1 of them was with leucoma after herpetic infection. The mean visual improvement due to the procedure is from 0, 22 to 0, 56 (Ranging from 0,01 to 0,5 as start-up vision indicated for PTK and ending with final vision in the range of 0,1 to 0,8). Patients underwent one or two PTK procedures (depends on the corneal thickness and intensity of the opacities) followed by LASEK as a refractive correction of hypermetropia (a result of flattening of the cornea). Only one patient needed PKP (keratoplasty) as a result of worsening of dystrophy 10 years after the initial PTK. Four eyes received PTK procedure over a corneal transplant because of recurrence of the dystrophy.


PTK leads to significant visual improvement and hence quality of life for patients with corneal opacities due to different causes. It can eliminate or postpone the need of keratoplasty. Patient satisfaction is high due to the significant improvement of the quality of vision -visual acuity, contrast sensitivity, reduction of corneal aberrations. Rapid rehabilitation is another issue that makes the procedure preferred over PKP as a refractive option in selected cases

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