Influences of Suture Materials on Corneal Astigmatism After Cataract Surgery

ABSTRACT

While advancements in microsurgical technique and suture material have led to meticulous wound closure in cataract surgery, excessive postoperative corneal astigmatism may delay visual recovery and compromise the ultimate optical outcome. Greater efforts to prevent and control surgically induced astigmatism have been made recently since the introduction and popularized use of intraocular lenses. Control of astigmatism has been attempted with intraoperative variations in the size, location, and type of incision, the selection of suture material, attention to suture depth and technique, the use of preplaced sutures to facilitate wound closure, and most recently, the application of surgical keratometers. We reviewed follow up records to evaluate and compare the influences on corneal astigmatism after extracapsular cataract extraction(ECCE) with intraocular lens implant in 100 cases of polyglactin 9l0(vicryl) group and 50 cases of polydioxanone (PDS) group, and results were as follows; 1. In planned ECCE group, mean corneal refractive power changes was -0.14D +/- 0.47 in vicryI group and -0.17D +/- 0.78 in PDS group, there was no significant correlation between two. In phacoemulsification(KPE) group, mean corneal refractive power changes was 0.05D +/- 0.49 in vicryl group and 0.27D +/- 0.82 in PDS group. There was no significant correlation between two. 2. In total group, mean corneal refractive power changes was 0.02D +/- 0.48 in vicryl group and 0.08D +/- 0.74 in PDS group. There was no significant correlation between two groups. 3. Mean power of cylindrical lens for correction of astigmatism was -0.76D +/- 0.98 in vicry I group and -0.67D +/- 0.71 in PDS group, there was no significant correlation between two.