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[Osseointegrated implant supported prostheses in the rehabilitation of severe orbital deformity in 6 cases].

Objective: To assess the effectiveness of osseointegrated implant supported prostheses in the rehabilitation of severe orbital deformity. Methods: Retrospective case series. The study collected 6 patients (6 eyes) with severe orbital deformity, who were treated with osseointegrated implant supported prostheses between 2010 and 2016 in Beijing Tongren Eye Center, Beijing Tongren Hospital. Data included demographic characteristics, causes of the deformity, the history of radiotherapy, the site, number and survival of implants, and the ability to wear prostheses. Results: Among the 6 patients, 4 were males, and 2 were females, with a mean age of 27 (16-44) years. The deformity resulted from evisceration or enucleation and radiotherapy for malignancies in 4 patients, from evisceration because of inflammatory pseudotumor in 1 patient, and from enucleation and debridement because of explosion injury and secondary infection in 1 patient. Each patient received 3 implants at the first operation. A total of 18 implants were installed, including 9 placed into the lateral aspect of the supraorbital rim, 6 into the lateral aspect of the infraorbital rim, 1 into the medial aspect of the supraorbital rim, and 2 into the medial aspect of the infraorbital rim. One superior lateral implant failed half a year after implantation, and an additional implant was implanted into the medial aspect of the inferior medial orbital rim for prostheses retention. All the patients were followed up for more than 2 years. No other failures were observed. The soft tissue reaction was acceptable in all patients. All of them were able to wear prostheses with satisfying appearance. Conclusions: Osseointegrated implants provid excellent retention for orbital prostheses. This technique could be used in patients with severe orbital deformity to improve their life quality. (Chin J Ophthalmol, 2019, 55: 665-669).