Complications after Excimer Laser Photorefractive Keratectomy in High Myopia.

Jeong, Ji Won; Hahn, Young Ho

Original Article

Journal of the Korean Ophthalmological Society 1997;38(7):1128-1138.
Published online July 1, 1997.

Complications after Excimer Laser Photorefractive Keratectomy in High Myopia.

Ji Won Jeong, Young Ho Hahn

Department of Ophthalmology, Kosin Medical College, Pusan, Korea.

고도근시에서 Excimer Laser PRK 후의 합병증

정지원(Ji Won Jeng),한영호(Young Ho Hahn)

Abstract

To evaluate the results and complications of excimer laser photorefractive keratectomy(PRK) in high myopia, 39-months follow-up study after PRK on 179 eyes with high myopia(more than -0.6 diopter) was performed prospectively. And comparative analysis in complications of excimer laser PRK between high myopia and low and moderate myopia(less than -5.9 diopter) was done. In case of high myopia, overcorrection was developed in 63 eyes(35.39%) and undercorrection was developed in 17 eyes(9.55%) 6 months after PRK. At 10 days, induced astigmatism appeared in 122 eyes(68.16%), but it wasdecreased with the lapse of time. Twenty three eyes(12.99%) lost 2 lines of best-spectacle-corrected visual acuity 1 year after surgery, but part of the eyes regained gradually baseline visual acuity. Clinically significant corneal haze was developed in 80 eyes(44.69%) during follow-up period. Excimer laser PRK in high myopia compared with low and moderate myopia induced significantly high occurrence in overcorrection, undercorrection, refractive astigmatism, loss of best-corrected visual acuity, and corneal haze(P<0.05).

Key Words: Complications;Excimer laser photorefractive keratectomy;High myopia