Plain Language Summary
1. Two-step TransPRK using EX500 is an effective, predictable, stable, and safe procedure for low to moderate myopia with or without astigmatism correction during 1-year follow-up period.
2. The highest safety and efficacy indices at 1-year post-operatively were remarkable in the adolescents with low myopic group.
3. Post-operative mean refractive spherical equivalent (MRSE) tended to be under-corrected, possibly due to the PTK mode. Therefore, the surgeon may add a PRK laser treatment aiming to over-correct between −0.25 and −0.50 diopters to subtract the myopic shift from the PTK.
4. Adolescents were more tolerant of postoperative night visual problems and dry eye symptoms than adults. Early post-operative detection and aggressive dry eye treatment may be essential to prevent corneal haze and regression.
Introduction
Transepithelial photorefractive…
