Anterior segment optical coherence tomography findings in type I Boston keratoprosthesis

Date
2018Author
Silva, Luzia Diegues [UNIFESP]
Santos, Albert [UNIFESP]
de Sousa, Luciene Barbosa [UNIFESP]
Allemann, Norma
de Oliveira, Lauro Augusto [UNIFESP]
Type
ArtigoISSN
0004-2749Is part of
Arquivos Brasileiros De OftalmologiaDOI
10.5935/0004-2749.20180010Metadata
Show full item recordAbstract
Purpose: To report the results of high-resolution anterior segment optical coherence tomography of patients implanted with a type 1 Boston keratoprosthesis (KPro). Methods: The retrospective study cohort included 11 eyes of 11 patients (average age, 58.4 years range, 34-83 years). All subjects underwent anterior segment optical coherence tomography at a single posteoperative time point. The main outcome measures were retro-backplate and retro-optic membrane formation, thinning and gap formation of the corneal carrier graft (melting), and degree of angle closure. Results: Preoperative diagnoses included chemical burn (55%), failed corneal transplant (36%), and Stevens-Johnson syndrome (9%). The mean postoperative follow-up duration was 38.5 (range, 12-72) months. The most frequent findings of anterior segment optical coherence tomography were retroprosthetic membrane formation (63%, 7/11), thinning of the corneal carrier graft (melting 55%, 6/11), and a narrow or closed angle (91%, 10/11). Other less common findings were epithelial growth over the optic surface and periprosthetic cyst formation. Retroprosthetic membrane formation was observed in all patients with melting (6/11). Conclusions: Detailed postoperative examination and visualization of subtle changes of keratoprosthesis implanted eyes by slit lamp biomicroscopy are often difficult. Anterior segment optical coherence tomography is a useful, noninvasive, and quantitative imaging technique that provides useful information to postoperatively monitor the anatomic stability of an implanted keratoprosthesis.
Citation
Arquivos Brasileiros De Oftalmologia. Sao Paulo, v. 81, n. 1, p. 42-46, 2018.Keywords
KeratoprosthesisCorneal diseases
Visual prosthesis
Optical coherence tomography
Anterior eye segment
Sponsorship
Ministry of Education - Brazil (CAPES) [2374/2011]Collections
- EPM - Artigos [17701]