Official ESCRS | European Society of Cataract & Refractive Surgeons


Difference in effective lens position between microincision and small incision

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Session Details

Session Title: Presented Poster Session: Combined Cataract Surgery & Cataract Surgery Complications

Venue: Poster Village: Pod 1

First Author: : H.Yoon SOUTH KOREA

Co Author(s): :    E. Kim   N. Kang                    

Abstract Details


To compare effective lens position (ELP) after phacoemulsification between micro-incision (2.25 mm) and small-incision (2.75 mm) group.


Bucheon St. Mary’s Hospital, College of Medicine, Catholic University of Korea, Seoul, Korea.


Sixty-seven eyes with age-related cataracts were randomly divided into two groups based on the width of the corneal incision (micro-incision [n=33] and small-incision groups [n=34]). Participants underwent clear corneal incision phacoemulsification combined with intraocular lens implantation. Uncorrected visual acuity, refractive error, corneal astigmatism and ELP were measured preoperatively and at two months postoperatively. ELP was calculated using the Sheimpflug method.


Postoperative mean visual acuity and refractive error did not differ between the groups (logMAR 0.02 vs. logMAR 0.04, P = 0.108; -0.30 diopter [D] vs. +0.07 D, P = 0.339). The postoperative surgically-induced corneal astigmatism was higher in the small-incision group than it was in the micro-incision group, although the difference did not reach statistical significance (+0.01 D vs. -0.36 D, P = 0.063). The mean difference between the pre- and post-operative ELP values was significantly higher in the small-incision group than in the micro-incision group (-0.04 mm vs. -0.51 mm, P = 0.024).


Although there was no significant difference in post-operative refractive error and corneal astigmatism between the micro- and small-incision phacoemulsification groups, the mean error between pre- and post-operative ELP was higher in eyes that underwent phacoemulsification with larger corneal incisions than it was in those that underwent smaller incisions.

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