Osteo-Odonto-Keratoprosthesis in Severe Thermal and Chemical Injuries

To report the results of osteo-odonto-keratoprosthesis (OOKP) surgery in patients who sustained severe chemical and thermal injuries.

This is a noncomparative retrospective case series of 14 patients who underwent OOKP surgery between 2001 and 2016 at the Sussex Eye Hospital, Brighton, UK, because of severe chemical and thermal injuries RESULTS:: OOKP surgery was performed in 14 eyes of 14 patients. Eight patients (57%) sustained thermal injuries and 6 patients (43%) chemical injuries. Every eye had previously undergone adnexal or ocular surgery, including 2 cases that underwent synthetic keratoprosthesis implantation. One case had choroidal hemorrhage during stage 2. Laminar retention was observed in 11 cases (85%) at the end of the study. The Kaplan-Meier curve showed a probability of 81% of laminar retention at 5 years and a decrease at 15 years to 61%. Functional visual success was observed in only 7 patients (50%) because of end-stage glaucomatous optic neuropathy in 4 cases and macular scar in 1 case. Two cases developed endophthalmitis. Two cases required removal of laminae, one because of endophthalmitis, bone resorption and aqueous leak and the other because of development of a retroprosthetic membrane. Glaucoma was the most frequent complication (79%) and required surgical intervention with tube shunts in 5 cases. Six cases (43%) required buccal mucosal repair, which included two cases that developed endophthalmitis.

Anatomic success was achieved in 11 of 13 cases in this series of OOKP surgery after severe chemical and thermal trauma; 8 of these cases had at least 5 years of follow-up and thus qualified as long-term.