The Location of Scleral Incision for Decrease of corneal Astigmatism in Sutureless Cataract Surgery.
- Author:
Dong Su KIM
1
;
Jun HUR
Author Information
1. Department of Ophthalmology, College of Medicine, Injae University, Pusan, Korea.
- Publication Type:Original Article
- Keywords:
With-the-rule astigmatism;
Scleral pocket incision;
Against-the-rule astigmatism;
Temporal incision;
Cataract surgery
- MeSH:
Astigmatism*;
Cataract*;
Humans;
Lens Implantation, Intraocular;
Phacoemulsification
- From:Journal of the Korean Ophthalmological Society
1997;38(11):1954-1959
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
We analysed postoperative corneal astigmatic changes to know that preoperative astigmatism was able to decreased according to the location of incision in sutureless cataract surgeries. We divided 70 patients, 81 eyes that scleral pocket incision, phacoemulsification, and posterior chamber intraocular lens implantation was performed into two groups. The one is the preoperative with-the-rule(WTR)astigmatism more than 1 diopter(D) with superior incision, and the other is the preoperative WTR less than 1D or against-the-rule (ATR) astigmatism with temporal incision. We followed up the corneal astigmatic chnges until six months postoperatively. According to the results of algebraic analysis, in the superior incision group, postoperative astigmatic changes showed WTR decrease of 0.43D immediately, which advanced toward ATR decrease of 0.41D immediately, which keep up ATR decrease and showed ATR decrease of 0.44D at 6 months. According to the results of vector analysis, surgical inducced corneal astigmatism was o.69D in superior incision group and 0.50D in temporal incision group at postoperative 1day. It was 0.98D in superior incision group and 0.57D in temporal incision group at postoperative 6 months. We could decrease preoperative corneal astigmatism with performing incision at the position of greater corneal curvature. Temporal incision group showed less surgical induced astigamatic changes than superior incision.
