두 가지 절개창 크기와 초음파수정체유화방식이 수술유발난시도와 각막 내피에 미치는 영향

Influences on Astigmatism and Corneal Endothelium Using Two Different Incision Sizes and Mode of Phacoemulsification

Purpose: To compare surgically induced astigmatism and influences on the corneal endothelium in phacoemulsification by Ozil<sup>&#9415; and Hyperpulse mode of Infiniti<sup>&#9415; using 2 different corneal incision lengths of 2.2 mm and 2.8 mm. Methods: The patients were grouped by the mode of phacoemulsification and incision size as follows: Ozil<sup>&#9415; mode with 2.2 mm incision group (n = 29), and 2.8 mm incision group (n = 30); Hyperpulse mode with 2.2 mm incision group (n = 29), and 2.8 mm incision group (n = 30). The surgically induced astigmatism, central corneal thickness and endothelial cell density were measured up to 2 months after surgery and the efficiency of 2 modes compared by measuring average phacoemulsification times. Results: There was no significant difference in the surgically induced astigmatism, central corneal thickness, endothelial cell density, best corrected visual acuity and average phaco power among 4 groups. The cumulated dissipated energy (CDE) using Ozil<sup>&#9415; mode was lower than Hyperpulse mode in the group of nuclear sclerosis grade 1 and 2. Conclusions: Two different modes of phacoemulsification using Ozil<sup>&#9415; and Hyperpulse mode, and different incision sizes of 2.2 mm and 2.8 mm in Infiniti<sup>&#9415; showed no significant difference in the endothelial cell density or the surgically induced astigmatism up to 2 months after surgery. Phacoemulsification using Ozil<sup>&#9415; mode is considered more efficient in low grade nuclear sclerosis cataract.