ABSTRACT
Objective: To evaluate the anatomical and visual outcome of surgical management of retinal detachment associated with chorio-retinal coloboma
Study Design: Prospective interventional case series
Place and Duration of Study: This study was conducted at Al-Shifa Trust Eye Hospital Rawalpindi from Jan 2012 to Dec 2013
Material and Methods: Twenty one eyes [21 patients] that underwent surgery for retinal detachment associated with chorio-retinal colobomas were selected. Evaluation was done on the basis of type of intervention, final visual acuity and anatomical outcome and complications. Out of 21, 19[90.47%] eyes underwent pars plana vitrectomy with silicone oil [SO] and 2[9.52%] underwent primary scleral buckling surgery. SO was removed in 9 [47.36%] eyes at final follow up. Encircling band was placed in 12 [63.15%] eyes based on peroperative judgment of surgeon. Intra-operative lensectomy was performed in 6 [28.57%] eyes. The main outcome measures were retinal re-attachment and visual recovery. Statistical analysis was performed using "IBM statistical package for social sciences [SPSS] Statistics" [version 17.0, Chicago, Illinois, USA]. Qualitative variables were described using percentage; quantitative data were defined using mean +/- standard deviation. The pre op and post op frequency of best corrected visual acuity [BCVA] was compared using Wilcoxan Signed Ranks Test. Confidence interval was 95% [level of significance p<0.05]
Results: The mean number of operations per eye were 1.57 +/- 0.74; mean follow-up was 13.1 months [range 12-18]. The retina remained attached in 18 eyes [85.71%] at final follow-up. The post op BCVA improved significantly as compared to pre op BCVA [p< 0.01]. Mean pre op BCVA was counting fingers [CF] and mean post op value of BCVA was 3/60
Conclusion: Pars plana vitrectomy along with silicon oil tamponade for retinal detachment related to choroiretinal coloboma improves the long-term anatomical outcome however no significant improvement in visual acuity was observed