Photorefractive Keratectomy by Extimer Laser for the Correction of Myopia.

Lee, Pong Ki; Koo, Kwang Lim; Song, Ki Young; Lee, Hae Young

Original Article

Journal of the Korean Ophthalmological Society 1993;34(12):1213-1220.
Published online December 1, 1993.

Photorefractive Keratectomy by Extimer Laser for the Correction of Myopia.

Pong Ki Lee, Kwang Lim Koo, Ki Young Song, Hae Young Lee

Department of Ophthalmology, Seoul Red Cross Hospital, Korea.

Excimer laser 를 이용한 근시의 수술적 교정효과

이동기(Dong Ki Lee),구광림(Kwang Lim Koo),송기영(Ki Young Song),이해영(Hae Young Lee)

Abstract

Photorefractive keratectomy was performed, using the excimer laser, on 117 myopic eyes. The eyes were classified in three groups by preoperative refractive errors, Group I included eyes with myopla ranging from -2.00D to -5.75D; Group 2 included eyes with myopia ranging from -6.00D to -9.75D; Group 3 included eyes with myopia over -10.0D. The eyes were followed up over six months to one year. During the follow up period, slit lamp examination, visual acuity, refractive error, pachometer, corneal opaty, IOP and corneal topography were examined, The results were as follows; 1. Preoperative mean visual acuities were 0.07 and postoperative mean visual acuities were 0.72. 2. Postoperative refractive errors were smaller and visual acuities were better in eyes of Group I than Group 2 or 3. 3 Immediate postoperative refractive states were hyperopia and regress over 4 to 12 weeks. 4.Keratometer reading and central corneal thicknesses were decreased postoperatively, but 4 to 12 weeks later, they started to increase. 5 There were mirlimal comeal corneal peaking at 4 weeks and diminishing over the next 3 to 6 months, which were not felt to be visually signicant.

Key Words: Corneal oparity;Excimer laser;Photorefractive;Keratedomy