Risk factors for retinal detachment after intraocular foreign bodies’ removal
Objective: To evaluate the risk factors for late retinal detachment occurrence after successful posterior segment intra‐ocular foreign bodies removal. Method: This prospective cases series study included subjects presented to one vitro‐retinal surgeon at vitrectomy clinic/ Ibn Al‐Haetham Teaching Eye Hospital from January 2007 to January 2012 with retained posterior segment intra‐ocular foreign bodies. Ocular complications related to the trauma were recorded. Extractions of foreign bodies were done through standard threeport vitrectomy technique. Nature and sizes of the foreign bodies were noted. Post operative occurrence of retinal detachment was recorded, regarding possible risk factors. Follow‐up time was at least 6 months after surgeries. Results: 51 subjects with posterior segment intra‐ocular foreign bodies were included. Most important mechanism of injury was shell injuries (43.1%). Majority of foreign bodies were metallic (82.4%), with mean average size of 4.6 mm3. Ocular complications at presentation were; vitreous hemorrhage (76.5%), lens injury (52.9%), retinal detachment (21.6%), siderosis bulbi (3.9%), endophthalmitis (3.9%), and increased intraocular pressure (2.0%). Late postoperative retinal detachment developed in 18 subjects (35.3%); 16 cases (88.9%) were due to formation of proliferative vitreo‐retinopathy, while 2 cases (11.1%) occurred in eyes with siderosis bulbi. Ten cases had post traumatic retinal detachment, and 6 of them had large foreign bodies (size was 10 mm3 or more). Conclusion: After successful posterior segment intra‐ocular foreign bodies’ removal late retinal detachment can occur mainly due to development of proliferative vitreo‐retinopathy which was related to presence of post traumatic retinal detachment and large foreign bodies.