Abstract

PurposeTo report the long-term outcome of pars plana vitrectomy (PPV) for management of retained posterior segment intraocular foreign body (IOFB) secondary to gunshot injury.MethodsThis is a retrospective interventional case series including consecutive patients who had PPV for retained posterior segment IOFB secondary to gunshot injury. Main outcome measures were final best-corrected visual acuity (BCVA), long-term globe survival and detection of complications. Spearman correlation analyzed relationships between numerical data. Kruskal–Wallis test compared differences in initial BCVA and final BCVA across variables. Categorical variables were tested using Chi square or Fisher’s exact test. P value is significant at 0.05.ResultsThe study included 103 eyes of 103 patients. Mean baseline BCVA was 0.01 decimal unit (2 logMAR). Mean duration from primary repair to PPV was 3 weeks. Mean duration of post-operative follow-up was 60 months. Mean final BCVA was 0.04 decimal unit (1.3 logMAR), p 0.001. Post-operatively, BCVA improved in 58.2% of patients. Nineteen patients (18%) gained ≥2 lines of vision, and 15 patients (14.5%) achieved final BCVA of 0.4 decimal unit (logMAR 0.4). All complications were related to the original injury. These included macular scar (19%), macular pucker (6%), recurrent retinal detachment (4%), subretinal fibrosis (3%), consecutive optic atrophy (3%), and PVR (3%). Phthisis bulbi or sympathetic ophthalmia did not develop in any case.ConclusionPPV for removal of IOFB caused by gunshot injury yielded long-term favorable functional outcome with excellent globe survival. Poor initial BCVA, location of IOFB in the posterior pole, associated lens injury and retinal detachment are significant adverse prognostic factors for final BCVA but not for globe survival.

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