Comparison of Corneal Astigmatism According to the Distance between Limbus and Internal Lip after Temporal Incision Cataract Surgery

Kim, Sang Won; Kim, Hae Song

Abstract

This study was carried out to evaluate corneal astigmatism according to distance between the limbus and internal lip after temporal incision cataract surgery. Twenty-five eyes of patients undergoing routine phacoemulsification with one plate haptic silicone IOL(STAAR)posterior chamber lens implantation with 3.0 mm temporal scleral pocket incision and sutureless method by one surgeon were randomly selected. Corneal astigmatism was evaluated at postoperative first day, first week, second week, first month, second month and analyzed by the Cravy s vector method. Internal lip length 1.0 mm group showed 0.11 diopter aganist-the-rule change of corneal astigmatism at the first week and 0.11 diopter with-therule change at the third month and internal lip length 1.5 mm group showed 0.16 diopter aganist-the-rule change of corneal astigmatism at first week and 0.04 diopter agaist-the-rule change at the third month but these differences were not statistically significant(students t-test:p>0.05). In this study we found that if a distance between the limbus and internal lip has longer than 1.0 mm, it was not an important factor on influencing the surgically induced astigmatism and could get wound stability after sutureless cataract sugery using a watertight scleral tunnel incision.