Effect of Incision Length on Visual Recovery and Astigmatism in No-Suture Cataract Surgery.

Lee, Dong Seong; Joo, Choun Ki

Original Article

Journal of the Korean Ophthalmological Society 1992;33(5):470-475.
Published online May 1, 1992.

Effect of Incision Length on Visual Recovery and Astigmatism in No-Suture Cataract Surgery.

Dong Seong Lee, Choun Ki Joo

Department of Ophthalmology, Catholic University Medical College, Seoul, Korea.

무봉합 백내장 수술에서 절개창 길이가 시력 및 난시도에 미치는 영향

이동성(Dong Seong Lee),주천기(Choun Ki Joo)

Abstract

To evaluate the effect of incision length on visual recovery and astigmatism in sutureless cataract surgery, three different lengths of incision were applied to 69 eyes. Soft intraocular lens (IOL) was inserted through 4mm incision in group 1 (16 eyes), ovoid polymethylmethacrylate (PMMA)IOL was inserted through 5mm incision in group 2 (31 eyes), and 7mm optic sized PMMA IOL was inserted through 7mm incision in group 3 (22 eyes). Average uncorrected visual acuity was 0.69, 0.52 and 0.57 at one week and 0.79, 0.68 and 0.66 at eight weeks in the group 1, group 2, and group 3 respectively. There was no statistically significant difference among the three groups (p>0.05). Keratometric astigmatism was 0.26 diopter (D), - O.1OD and -O.12D in the group 1, group 2, and group 3 respectively. There was no statistically significnt difference among the three groups (p>0.05). Keratometric astigmatism was 0.26 diopter (D), -O.1OD and O.12D in the group 1, group 2, and group 3 respectively at one week postoperatively. The change of mean keratometric astigmatism from 1 to 8 weeks postoperatively was 0.73D in group 1 ,0.60D in group 2 and 0.79D in group 3 and there was no statistically significant difference among the three groups (p>0.05). As postoperative problems, microleakage of aqueous humor at incision site and cystoid macular edema were shown in 6% of the group 1. Microhyphema was shown in 6% of group 1, 6% of group 2 and 18% of group 3 at one day postoperatively. Early clinical observations indicate that sutureless cataract surgery shows early visual recovery and minimizes surgically induced astigmatism without serious complications, regardless of length of incision.

Key Words: Induced astigmatism;Length of incision;No-suture