Visual outcome of intraocular lens implantation in Noor Military National Eye Hospital .

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Research type: Research Paper

Authors: Abdalla, El Fadil El Faki Awadalla .

Abstract: Inraocular lens [IOL] implantation is now accepted as the most effective means of aphakic correction in selected patients undergoing cataract surgery. Recent improvement in IOL design, manufacturing techniques, and surgical techniques have greatly reduced the incidence of complications following implantation, and many authors now consider IOL implantation to be among the most save and effective major surgical procedure. This prospective study was performed to evaluate visual outcome of IOL implantation in Noor Military National Eye Hospital in which 100 patients (100 eyes) already planned for IOL implantation were randomly selected for this evaluation. After operations all of the patients were followed up for a period of 3 months, therafter visual acuity scores were obtained. Non-supplementary corrected visual acuity of 6/12 or better was found in 44 patients (44 percent), this amount was doubled (88 patients or 88 percent) on additional correction. 75 patients (75 percent) had visual acuity score of 6/9 or better on supplementary correction. 12 patients (12 percent) had an additionally corrected visual acuity of less than 6/12, half of these patients (6 out of 12) were in the older age group of 65 - 74 years. The degree of supplementary correction in absolute value of spherical equivalent (sphere + half cylinder) was less than 1.00 sq in 54 percent of cases, between 1.00 and less than 2.00 sq in 24 percent, between 2.00 and less than 3.00 sq in 13 percent and 3.00 sq or more in 9 percent of the cases. The amount of postoperative astigmatism was less than 1.00 D. Cyl. in 46 percent of cases, between 1.00 and less than 2.00 D. Cyl. in 18 percent, between 2.00 and less than 3.00 D. Cyl. in 19 percent, and 3.00 D. Cyl, in 17 percent of the cases. Postoperative main causes rendering supplementary corrected visual acuity to score less than 6/12 was found in 12 patients (12 percent). The incidence of which was 5 cases of pseudophakic Keratopathy, 3 cases of posterior capsule opacification, 2 cases of preoperative glaucoma, and the remaining 2 cases were preoperative amblyopia and endophthalmitis. The entire 3 cases of posterior capsule opacification in addition to 3 out of a total of 5 cases of pseudophakic Keratopathy, were found in the age group 65 - 74 years.