Four-Year Results of Laser In Situ Keratomileusis for High Myopia.
- Author:
Hyun Jin KIM
1
;
Choun Ki JOO
Author Information
1. Laboratory of Ophthalmology and Visual Science Medical College, The Catholic University of Korea, Seoul, Korea. ckjoo@catholic.ac.kr
- Publication Type:Original Article
- Keywords:
Efficacy;
High myopia;
LASIK;
Myopic regression
- MeSH:
Follow-Up Studies;
Humans;
Keratomileusis, Laser In Situ*;
Myopia*;
Refractive Errors;
Retrospective Studies;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2003;44(5):1165-1171
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the long term efficacy and stability of laser in situ keratomileusis (LASIK) for high myopia. METHODS: We investigated a retrospective study of 51 eyes that had LASIK to correct myopia. During the follow-up period, uncorrected visual acuity (UCVA) and refractive error were examined. The patients were divided into two groups according to preoperative refraction: Group 1, -6D to -10D (27 eyes); Group 2, -10D to -19D (24eyes). The data were analyzed using paired T-test and regression analysis. RESULTS: In group 1, mean spherical equivalent was -7.82+/-1.34D preoperatively and -0.19+/-1.35D at 2 months and -0.86+/-1.15D at four years postoperatively. In group 2, it was -12.66+/-2.66D preoperatively and -0.10+/-1.58D at 2 months and -1.76+/-1.78D at four years postoperatively. Myopic regression was statistically significant in both groups between 1 and 6 months, although the high myopia group had further regression. It was stable after 6 month in group 1(p>0.05) and continued during the four-years follow-up in group 2 (p<0.05). In group 1, uncorrected visual acuity was 0.84+/-0.15 at 6month and 0.64+/-0.27 at four year after LASIK . In group 2, it was 0.67+/-0.15 at 6month and 0.52+/-0.22 at four year after LASIK. At the last examination, the spherical equivalent was within 1.00D in 63% and 42%, respectively. UCVA was 0.5 or better in 74% and 50% of eyes in group 1 and group 2. CONCLUSIONS: According to these results, LASIK was safety and effective in the correction of high myopia but myopic regression was continuous progressed in myopia up to 10.00D.
