Twelve-Month Visual and Anatomical Outcomes of Boston Type I Keratoprosthesis in Four Patients with Multiple Graft Failures and Severe Ocular Pathology.

At 12 months, all devices were retained.

Two eyes (50%) developed complications - retroprosthetic membranes, vitritis/suspected endophthalmitis, stromal melting, chronic hypotony, and silicone-oil leak - all managed without device loss; one eye's vision declined to finger counting at month 7 but remained ambulatory.