Original articleMoscow Eye Microsurgery Complex in Russia Keratoprosthesis in Beijing
Section snippets
Patients and Methods
A retrospective review was performed of all MICOF keratoprosthesis procedures performed between April 1, 2000, and August 31, 2009 at the Chinese PLA General Hospital (Beijing, China). The indication for MICOF keratoprosthesis surgery was bilateral corneal blindness with severe corneal neovascularization caused by SJS, OCP, or any type of burn (alkali, acid, or thermal). All cases had a history of multiple failed corneal surgeries or ocular surface transplantation procedures and were judged
Surgical Procedure and Postoperative Management
The MICOF keratoprosthesis is composed of a central rigid PMMA optical cylinder (diameter, 2.5 mm) and a titanium frame. Cylinder length was 2.2 to 2.4 mm and selected according to the thickness of the cornea. The range of dioptric power was +55.00 to +62.00 diopters. The optical power was selected according to axial length as measured by A-scan ultrasonography.
Preoperative Characteristics
A total of 85 MICOF keratoprostheses were implanted in 85 eyes of 85 patients. Seventy-one patients were male and 14 patients were female, with a mean age of 44.9 years (range, 19–80 years). In all patients, preoperative best spectacle-corrected VA ranged from counting fingers to light perception; preoperative VA in the contralateral eye was light perception or not.
The most common preoperative corneal diagnosis was alkali burn (39 eyes, 45.9%), followed by thermal burn (20 eyes, 23.5%), acid
Preoperative Characteristics
Keratoprosthesis implantation in patients with corneal blindness is usually considered the last option for patients to regain sight in China. Thereafter, most eyes received prior corneal transplantations or were high risk for traditional PK. In our study, 41 of 85 eyes had a history of corneal transplantation; 18 eyes had received more than 1 corneal transplant. A previous study showed that eyes with prior transplantation failure from noncicatricial causes had the best prognosis (83% of those
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Manuscript no. 2009-1321.
Financial Disclosure(s): The author(s) have no proprietary or commercial interest in any materials discussed in this article.
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Yifei Huang and Jifeng Yu contributed equally to this work.