Effect of the Spheric Multi-curve Lens on Changes of Corneal Topography and Endothelial Cell in Keratoconus. |
Ki Mock Yang, Mee Kum Kim, Jae Lim Lee, Chang Sik Kim |
1Department of Ophthalmology, Chungnam National University College of Medicine, Daejon, Korea. opht@unitel.co.kr 2Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea. |
원추각막에서 구면다곡률렌즈 착용이 각막지형도 및 내피세포에 미치는 영향 |
양기목 ( Ki Mock Yang ) , 김미금 ( Mee Kum Kim ) , 이재림 ( Jae Lim Lee ) , 김창식 ( Chang Sik Kim ) |
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Abstract |
PURPOSE To analyze the effect of the spheric multi-curve lens on the changes of corneal topography and endothelial cells in keratoconic eye. METHODS: Forty-nine eyes of 37 keratoconic patients who had been followed more than 6 months were included in the study. Twenty-six eyes of 19 patients were fitted with spheric multi-curve lens, and the remaining 23 eyes of 18 patients were followed without any lens fitting as control. After spheric multi-curve lens fitting, visual acuity, and slit lamp examination were evaluated. Changes of corneal topography and endothelial cell were evaluated at first visit and 6 months after lens fitting. RESULTS: After lens fitting, 21 eyes (80.8%) showed best corrected visual acuity of better than 20/25. The value of the steepest Sim-K, shape factor (SF), and apical corneal power on corneal topography were significantly decreased in the spheric multi-curve lens fitting group compared to the control group (p<0.05). On the other hand, the value of the flattest Sim-K, and corneal irregularity measure (CIM) were not significantly changed (p>0.05). There were no significant differences in change of corneal endothelial cell density, mean cell area and percentage of hexagonal cell between the two groups (p>0.05). CONCLUSIONS: Short-term wearing of spheric multi-curve lens for 6 months in keratoconic patients showed no effect on progression of keratoconus and cornealendothelial cells. |
Key Words:
Corneal topography;Endothelial cell;Keratoconus;Spheric multi-curve lens |
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