Effect of Reverse Geometry Lens on Correction of Moderate-degree Myopia and Cornea.
- Author:
Dong Bin SHIN
1
;
Ki Mock YANG
;
Seong Bok LEE
;
Mee Kum KIM
;
Jae Lim LEE
Author Information
1. Department of Ophthalmology, Chungnam National University College of medicine, Daejon, Korea. opht@unitel.co.kr
- Publication Type:Original Article
- Keywords:
Corneal endothelium;
Corneal thickness;
Reverse geometry lens;
RGP lens
- MeSH:
Cornea*;
Corneal Topography;
Endothelial Cells;
Endothelium, Corneal;
Epithelium, Corneal;
Humans;
Myopia*;
Refractive Errors;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2003;44(8):1748-1756
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the effect of reverse geometry lens (RGL) on correction of moderate degree myopia and cornea in patients of moderate-degree myopia. METHODS: 48 eyes of 82 eyes were chosen to wear reverse geometry lens and the remaining 34 eyes were fitted with rigid gas permeable (RGP) lens. The subjects were tested three days, one, two weeks, one, two and three months after fitting the lens. Uncorrected visual acuity, manifested refractive error, corneal thickness and corneal endothelial cell count were evaluated. corneal topography were performed. RESULTS: The uncorrected visual acuity was increased at 0.05 LogMAR after two weeks. and manifested refractive error decreased during the first months, thereafter stabilizing to -0.2 D (diopters). Corneal thickness was 540.4 micrometer and 583.0 micrometer in the center and mid-periphery, decreased to 505.2 micrometer and 572.7 micrometer, respectively, three months after RGL fitting (p<0.05). Endothelial cell count was 2663.5 cells/mm2 and 2541.5 cells/mm2 in the center and mid-periphery, 3 months after RGL fitting and endothelial cell count was not significantly different compared with that of pre-fitting. There was no statistical difference between RGL fitting group and RGP fitting group in the change of corneal endothelial cell count. CONCLUSIONS: RGL was found to be effective in correction of moderate-degree myopia. It had minimal effect on corneal endothelium, in short-term usage, however, the change of corneal thickness suggests that RGL fitting may effect on corneal epithelium and stroma.
