The Analysis of Corneal Topography after Laser in Situ Keratomileusis(LASIK) for Myopic Correction.
- Author:
Hyun Hu LEE
1
;
Min Cheol SHIN
;
Ha Bum LEE
Author Information
1. Department of Ophthalmology, Kangdong Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, Korea. hblee1@chollian.net
- Publication Type:Original Article
- Keywords:
LASIK;
Laser in situ keratomileusis;
Corrected visual acuity;
Corneal topography
- MeSH:
Classification;
Corneal Topography*;
Female;
Humans;
Keratomileusis, Laser In Situ;
Lasers, Excimer;
Male;
Myopia;
Refractive Surgical Procedures;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2001;42(7):960-966
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To investigate the patterns of corneal topography after LASIK METHODS: The author have performed LASIK to correct the myopia of 21 male and 34 female patients. The corneal topography was performed at preoperative state and 2 days, 1, 3, 6, 12months after operation. RESULTS: Differential maps were classified using a standard eight-category classification scheme which were divided into a combined regular group(toric-with-axis, toric-against-axis, homogeneous, focal topographic variant) and a combined irregular group(semicircular, irregularly irregular, central island, keyhole). At 2 days, the distribution of corneal topographic patterns was 61.8% in a combined regular group and 38.2% in a combined irregular group. Of all patterns, the homogeneous pattern was predominant. The best corrected visual acuity was better in a combined regular group than in a combined irregular group which was statistically significant. After postoperative 1 month, most irregular patterns had a change in topography, generally to an optically smoother pattern. CONCLUSIONS: Corneal topography has been established as an invaluable tool for refractive surgery and this analysis allows the recognition of normal and abnormal patterns of ablation following excimer laser surgery.
