A long-term outcome of vitrectomy and silicone oil tamponade in cases with severe intraocular for-eign body injuries

Abstract

Objective To evaluate the long-term outcome of vitrectomy and silicone oil tamponade in cases with severe intraocular foreign body (IOFB)injuries.Methods This retrospective consecutive study in-eluded 18 cases with severe IOFB injuries.All cases underwent pars plana vitrectomy, removal of the IOFB, and primary silicone oil tarnponade and were followed up for a mean 27.8 months.Follow-up data were documented including best-corrected visual activity, proliferative vitreoretinopathy (PVR), glaucoma, keratopathy, cataract, hypotony,and phthisis bulbi.Results On the 3rd,6th, 12th,and 24th month after surgery,the functional suc-cess (VA≥0.02)rates were 88.9%, 100%, 100% and 100% respectivery, and better than that. (27.8%)before surgery(P 0.05).PVR occurred in silicone oil eyes was 28.6%, lower than that (90.9%)in silicone oil removal eyes on the 12th month after surgery(P<0.05).PVR occurred in eyes with silicone oil tamponade≥12 months was 42.9%, lower than that(90.9%)in eyes with silicone oil tamponade<12 months on the 24th month after surgery(P<0.05).Temporary increase of intraocular pressure was present in 61.1% of all eyes.Keratopathy occurred in 16.7%,and hypotony 11.1%.There was no cataract and phthisis bulbi in all eyes.Conclusions The cases with severe IOFB injuries can be managed with pars plana vitrectomy and primary silicone oil tamponade satisfactorily.The risk of PVR may be degrade with added the time of silicone oil tamponade in severe IOFB eyes. Key words: Intraocular foreign body injuries; Vitrectomy; Silicone oil