Refractive Effects of Excimer Laser Radial Keratotomy and Central Photorefractive Keratectomy using Excimer Laser for Correction of Myopia.
- Author:
Mi Kyung KIM
1
;
Ha Bum LEE
Author Information
1. Department of Ophthalmology, College of Medicine, Hallym University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Central photorefractive keratectomy;
Myopia;
Radial keratotomy
- MeSH:
Keratotomy, Radial*;
Lasers, Excimer*;
Myopia*;
Photorefractive Keratectomy*;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
1995;36(11):1876-1884
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
This study was performed to compare the refractive effect and visual outcome of Excimer laser radial keratotomy(RK) with those of central photorefractive keratectomy(PRK) for myopia correction. The myopic eyes were subdivided into mild(-2.75D), moderate(-3.00 ~ -5.75D) and severe(>-6.00) myopia. In 54 eyes treated with RK 3 eyes(5.6%) were mild, 26 eyes(48.1%) were moderate and 25 eyes (46.3%) were severe myopic eyes. In 518 eyes treated with central PRK 10 eyes(1.9%) were mild, 214(41.3%) were moderate and 294(56.8%) were severe myopic eyes. Mean reduction of refractive power measured with skiascope following RK and central PRK in mild, moderate and severe myopia were 1.42 +/- 0.85D and 3.19 +/- 0.84D, 2.07 +/- 1.75D and 4.66 +/- 1.90D, and 2.54 +/- 2.45D and 7.54 +/- 2.81D, respectively. Mean reduction of keratometric diopter following RK and central PRK in mild, moderate and severe myopia were 2.00 +/- 1.05D and 3.66 +/- 1.03D, 1.90 +/- 1.05D and 4.83 +/- 1.99, and 1.52 +/- 2.54D and 5.58 +/- 3.46D, repectively. Uncorrected visual acuity following RK and central PRK in mild. moderate and severe myopia were 0.73 +/- 0.19 and 0.91 +/- 0.26, 0.43 +/- 0.30 +/- and 0.79 +/- 0.24, and 0.20 +/- 0.13 and 0.66 +/- 0.28, respectively. In conclusion, refractive effect and visual outcome of central photorefractive keratectomy was better than the those of radial keratotomy for correction of myopia; especially high myopic eyes.
