Extracapsular Cataract Extraction Using Scleral Pocket Incision

We analyzed corneal astigmatism 2 months after extracapsular cataract extraction with posterior chamber intraocular lens implantation using scleral pocket incision to minimize postoperative corneal astigmatism. Among the patients who were operated between July 1993 and April 1994, 25 eyes of 20 patients could be followed up over 2 months. Keratometric and refractive measurements were obtained before and at every week after operation. The mean postoperative refractive astigmatism was +1.42D at 1 week, +0.02D at 8 weeks and mean postoperative keratometric astigmatism was +1.58D at 1 week, -0.17D at 8 weeks. Our results suggest that extracapsular cataract extraction using scleral pocket incision has the advantage of decreasing early postoperative astigmatic change.

Postoperative astigmatism following intraocular lens implantations.

During the period from 1st January 1987 to 31st December 1988, a total of 80 patients (33 males, 47 females) total 100 eyes; right eye 56, left eye 44), age of 43-89 years, underwent extracapsular lens extraction and posterior chamber intraocular lens implantation at the Siriraj Hospital. When 2 months after operation, the refraction were measured by retinoscopy which revealed. Emmetropic eye (4%); 29 Spherical refractive error (29%); 67 Astigmatism (67%). Among the cases with astigmatism under 2 were 27 Sphero-cylinder, 31 Sphero-cylinder with minus cylinder. 54 of astigmentism under 2 diopters of cylinder and 13 over 2 diopters of cylinder. The average of astigmatism was 1.63 diopters of cylinder and the maximum value of cylinder was 4 diopters. The axis of cylinder (the power of cylinder minus lens) was of 90 degrees = 39; at 180 degrees = 14 and at other degree = 14.