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Epithelial debridement for secondary hyperopia following myopic excimer laser photorefractive keratectomy
S Shah1, A Chatterjee, S J Doyle
1Optimax Laser Eye Clinic, Manchester, England.
Background:
To evaluate epithelial debridement for the treatment of persistent hyperopia in eyes that had photorefractive keratectomy (PRK).
Setting:
Optimax Laser Eye Clinics, Manchester, London, Bristol, England.
Methods:
Epithelial debridement was performed on 46 eyes to reduce the hypermetropia following excimer laser PRK.
Results:
Mean age of the patients was 43 years +/- 9.7 (SD). Mean refractive change was -0.51 diopter (D) +/- 0.76 (range +0.75 to -2.50 D). Mean change in best corrected visual acuity (BCVA) was 0.00 Logmar units (range +0.40 to -0.20 units), although 33% of eyes lost one line or more of Logmar BCVA. Mean follow-up after debridement was 61.0 +/- 26.9 weeks (range 26 to 140 weeks).
Conclusions:
Epithelial debridement is an unpredictable procedure to treat secondary hyperopia after PRK, producing a small mean change in spherical equivalent with a wide range of results. A significant number of eyes lost one line or more of Logmar BCVA. We therefore do not advocate epithelial debridement after PRK.