Abstract

Study design: Retrospective study of 112 patients (224 eyes) who underwent PRK for myopic, astigmatic correction
Purpose: Evaluate 24month outcome of PRK patients with high myopia (≥ 6 D) compared with low-to-moderate myopia (< 6 D)
Methods:High myopic (48 eyes) were compared with low-to-moderate myopic (176 eyes). 0.02% MMC was used intraoperatively Measured outcomes were postoperative UDVA CDVA MRSE corneal haze
Results: At 12 month post PRK, 48 eyes(21.4%) in high myopia, 176 eyes(78.5%) in low-to-moderate myopia group had UDVA ≥ 20/20 (p< 0.05). Average snellen UDVA at 12 months was 20/20 for both group. Residual refractive error >1 D significant corneal haze was not seen after 1 year. Efficacy, safety indices at 12 month were not significantly different between 2 groups (1.06±0.25 vs 1.14±0.25, p <0.05and 1.14±0.25 vs 1.17±0.26 p< 0.05)
Conclusion: PRK for high myopic correction provides good refractive safety efficacy outcomes comparable to low-to-moderate myopic correction

Full Text