| The Corneal Endothelial Protective Effect of Soft Shell Technique in Cataract Surgery. |
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Do Hyung Lee, Tae Yoon La, Jae Ryong Oh |
1Department of Ophthalmology, Ilsan Paik Hospital, College of medicine, Inje University, Korea. dhlee@ilsanpaik.ac.kr
2Kangnam St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Korea. |
| Soft Shell Technique을 이용한 백내장 수술에서 각막내피세포의 보호 효과 |
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이도형 ( Lee Do Hyeong ) , 나태윤 ( Na Tae Yun ) , 오재룡 ( O Jae Lyong ) |
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| Abstract |
PURPOSE
To evaluate the efficacy and safety of soft shell technique (SST) to reduce corneal endothelial damage during cataract surgery. METHODS: Cataract surgery was performed in thirty five eyes using SST with Healon and Viscoat , and in thirty five eyes with Healon alone as a control group. The corneal parameters such as corneal thickness, cell density, hexagonality, and the coefficient of variance were evaluated. RESULTS: The mean central corneal thickness in the control group was 533.1 +/- 34.9micrometer before surgery and 549.1 +/- 34.3micrometer at one week after surgery. The difference in corneal thickness was statistically significant (p<0.01). However, in the SST group, the change in corneal thickness before and after surgery was not statistically significant (529.5 +/- 36.3micrometer, 536.0 +/- 36.9micrometer, respectively). There were statistically significant changes in cell density after surgery in both groups. The results for the control group were 2478.5 +/- 319.7/mm2 before surgery and 1861.9 +/- 109.1/mm2 at 3 months after surgery. The result for the SST group were 2571.2 +/- 256.5/mm2 before surgery and 2107.2 +/- 374.1/mm2 at 3 months after surgery. The rate of endothelial cell loss at 3 months after surgery was smaller in the SST group (19%) than in the control group (25%). The coefficient of variance and hexagonality were normalized at one week after surgery in SST group. CONCLUSIONS: These results suggest that SST is effective in protecting corneal endothelial cells during cataract surgery, providing better results in the early postoperative period. |
| Key Words:
Cataract;Corneal endothelial damage;Soft shell technique |
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