Journal of the Korean Ophthalmological Society 2003;44(5):1165-1171.
Published online May 1, 2003.
Four-Year Results of Laser In Situ Keratomileusis for High Myopia.
Hyun Jin Kim, Choun Ki Joo
Laboratory of Ophthalmology and Visual Science Medical College, The Catholic University of Korea, Seoul, Korea. ckjoo@catholic.ac.kr
LASIK (Laser in situ keratomileusis) 후 4년 동안의 임상결과
김현진 ( Hyun Jin Kim ) , 주천기 ( Choun Ki Joo )
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.
Key Words: Efficacy;High myopia;LASIK;Myopic regression


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