Influences of Suture Materials on Corneal Astigmatism After Cataract Surgery

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.

A Case of Orbital Cavernous Hemangioma

A 40 year-old female was admitted to our hospital because of proptosis for 4 years. Detecting a 2 cm-sized retrobulber mass on computerized tomography, we extracted well capsulated reddish brown mass, which confirmed as a cavernous hemangioma by histologic examination. One year postoperatively, her proptosis was gone, visual acuity was normal, and ocular motility was good.

Changes of Intraocular Pressure after Implantation of the Posterior Chamber Lenses

Preoperatively normotensive 211 cases of extracapsular cataract extraction (ECCE) and posterior chamber lens implantation in the capsular bag had intraocular pressure (IOP) measurements recorded 3 months postoperatively. Analysing the data of IOP level, surgical technique (planned extracasular cataract extraction or Kelman phacoemulsification), age, sex and corneal curvature, we could find the following results. 1. The mean change in intraocular pressure (postoperative IOP minus preoperative pressure) was -0.8 mmHg. 2. In 8 cases(3.8%) of 211 eyes postoperative IOPs were higher than 21 mmHg. 3. The higher preoperative IOP level was, the more the decrease of postoperative IOP was. 4. The changes in intraocular pressure was more significant in females than males. 5. There was no significant change in IOP level according to the age, surgical technique and corneal curvature.