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Changes of the corneal coma aberration depending on the incisional location in cataract surgery

Poster Details

First Author: I.Song SOUTH KOREA

Co Author(s):    A. Yoo   J. Park   J. Park   J. Kim   M. Kim   H. Tchah

Abstract Details


To evaluate the change of corneal coma aberration depending on the incision location in cataract surgery


Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, Hanyang University Medical Center, Seoul, Korea


A total of 163 eyes undergone uncomplicated cataract surgery with 2.2mm incision was evaluated. Eyes were divided into 2 groups according to whether superior (11-1o/c) or right (8-10o/c) incision after slit-lamp examination postoperatively. Preoperative and 1 month postoperative corneal vertical and horizontal coma aberrations were compared using OPD-Scan III (Nidek, Japan) over a 6-mm zone.


The changes of vertical and horizontal coma in the superior incision group were -0.105±0.151 µm (P=0.001) and 0.037±0.176 µm (P=0.250), alternatively. The changes of vertical and horizontal coma in the right incision group were -0.016±0.217 µm (P=0.438) and 0.020±0.117 µm (P=0.064), alternatively.


The superior incision caused a change of corneal vertical coma to the negative side in 2.2 mm phacoemulsification cataract surgery. It could be useful to consider coma aberration as well as astigmatism when choosing the incision location. FINANCIAL INTEREST: NONE

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