Clinical Results of LASIK using LaserScan LSX(R) for Myopia.

Yim, Jin Ho; Choi, Si Hwan; Lee, Jae Lim

Original Article

Journal of the Korean Ophthalmological Society 2002;43(9):1685-1692.
Published online September 1, 2002.

Clinical Results of LASIK using LaserScan LSX(R) for Myopia.

Jin Ho Yim, Si Hwan Choi, Jae Lim Lee

Department of Ophthalmology, College of Medicine, Chungnam National University, Taejon, Korea. shchoi@cnu.ac.kr

1 mm Spot scanning laser(Laser Scan LSX(R)) 를 이용한 LASIK 의 근시교정결과

임진호 ( Jin Ho Yim ) , 최시환 ( Si Hwan Choi ) , 이재림 ( Jae Lim Lee )

Abstract

PURPOSE
We evaluated the predictability and efficacy of LASIK using 1 mm spot scanning laser (LaserScan LSX(R)). METHODS: LASIK was performed on 135 eyes of 73 patients from December, 1999 to February, 2001. The range of refractive error was from .11.5 D to .2.0 D (mean+/-SD : .5.88 D+/-1.79 D) and age was from 20 to 42 years (mean age: 27.8 years). They were divided into two groups according to their manifest refractive error(spherical equivalent): Group I (< -6.0 D, 73 eyes) and Group II (> of = -6.0 D, 62 eyes). And according to their astigmatism: Group A (< or = 0.75 D, 51 eyes), Group B (> or = 1.0 D, 48 eyes). RESULTS: Mean uncorrected visual acuity of 1 year after LASIK improved from 0.06 before operation to 1.0 in Group I and from 0.04 to 0.9 in Group II. Uncorrected visual acuity of 0.8 or better was achieved in 90% of eyes in Group I and 74% in Group II. Mean preoperative spherical equivalent was -4.6 D in Group I and -7.4 D in Group II. Mean spherical equivalent of 1 year after LASIK was -0.1 D in Group I and -0.37 D in Group II. The postoperative refractions within +/-0.5 D of emmetropia were 97% in Group I and 85% in Group II. Mean preoperative astigmatism was 0.56 D in Group A and 1.68 D in Group B. Mean postoperative astigmatism was 0.15 D in Group A and 0.17 D in Group B. Postoperative refraction showed slight regression of 0.16 D in Group I and 0.45 D in Group II throughout the follow-up period. CONCLUSIONS: We conclude that LASIK using spot scanning laser (LaserScan LSX(R)) appears to be a safe and relatively accurate procedure to correct moderate to high myopia and astigmatism.

Key Words: LASIK;Spot scanning laser;LaserScan LSX(R)