先天性白内障手术后早期较大散光的向量分析
Vector analysis of high early postoperative astigmatism after congenital cataract surgery作者机构：Goldschleger Eye Institute Sheba Medical Center 52621 Tel-Hashomer Israel
出 版 物：《世界核心医学期刊文摘(眼科学分册)》 (Digest of the World Core Medical Journals)
年 卷 期：2006年第1期
页 面：48-48页
学科分类：1002[医学-临床医学] 100212[医学-眼科学] 10[医学]
主 题：先天性白内障 手术后 向量 患儿 巩膜隧道 术后早期
摘 要：Background: Corneal astigmatism is a well-documented finding after cataract surgery. Postoperative astigmatism is of greater importance in children than in adults, because of its adverse effect on vision development and the risk of amblyopia. The purpose of this study was to evaluate refractive outcomes in eyes-which had high early postoperative astigmatism after congenital cataract surgery. Methods: We retrospectively reviewed the charts of 74 children (112 eyes), who underwent congenital cataract extraction with intraocular lens implantation, using limbal incision, scleral tunnel, or clear corneal incision. Thirty-two eyes of 28 children, aged 2 months to 11 years, had astigmatism of 3.0 diopters (D) or more when assessed 1 week after surgery. Changes in cylinder vector, spherical equivalent (SEQ) and defocus equivalent (DEQ) between 1 week and 5 months postoperatively were calculated for each group. Results: Mean SEQ and DEQ were 0.7± 3.5 D and 5.1± 2.8 D, respectively, at 1 week postoperatively-and -0.2± 3.4 D and 3.1± 2.3 D, respectively, at 5 months postoperatively in the three groups. DEQ levels showed a significant reduction during the 5-month follow-up period (P 0.001). The mean astigmatism vector was 2.9± 3.3 D× 93° in all the three groups 1 week postoperatively-and 0.2± 1.1 D× 153° at 5 months after surgery. A significant change during 5-month follow-up in cylinder vector (P 0.02) and SEQ (P=0.01) was found after operations using scleral tunnel technique. Conclusion: Children-who underwent congenital cataract surgery by different surgical techniques showed a significant spontaneous reduction in DEQ values. A significant change in cylinder vector and SEQ was found after operations using scleral tunnel technique.
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