Surgical prevention of posterior capsule opacity in congenital cataract

Abstract

Objective To explore the surgical preventive methods of posterior capsule opacity in congenital cataract.Methods 80 cases (84 eyes) of congenital cataract were enrolled in the study who underwent cataract extraction and intraocular lens implantation.All cases were divided into two groups:the experimental group(46 eyes of 44 cases) and the control group (38 eyes of 36 cases).The experimental group underwent anterior capsulorhexis,posterior capsulorhexis and the intraocular lens optical unit was embedded in the margin of the posterior capsular opening.Only anterior capsulorhexis and posterior capsulorhexis were performed in the control group.The visual acuities and degrees of posterior capsule opacity were compared between two groups.Results The patients' corrected visual acuities in the experimental group were better than that in the control group after surgery.The differences were statistically significant (x2 =5.006,P ＜ 0.05).The results of degrees of posterior capsule opacity were 35 cases in experimental group and 9 cases in control group at level 0,5 cases in experimental group and 12 cases in control group at level 1,3 cases in experimental group and 8 cases in control group at level 2,3 cases in experimental group and 9 cases in control group at level 3 and level 4.The ratio of clear posterior capsule in experimental group was higher than that in control group significantly.The incidences of posterior capsule opacity in experimental group were lower than that in control group at five different levels,the differences were statistically significant (x2 =22.91,P ＜ 0.05).Conclusion Anterior capsulorhexis,posterior capsulorhexis and intraocular lens optical unit embedded in the margin of the posterior capsular opening can reduce the incidence of posterior capsule opacity in congenital cataract surgery and benefit visual function recovery. Key words: Cataract , congenital; Opacity, capsule, posterior; Capsulorhexis, double ; Lens, intraocular; Embed