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Boston keratoprosthesis type I in the elderly
Gelareh Homayounfar1, Christina M Grassi1, Ahmad Al-Moujahed1
1Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts, USA.
The British Journal of Ophthalmology
|July 7, 2016
Summary
Boston type I keratoprosthesis effectively restores vision in elderly patients with corneal blindness. While complications occur, non-corneal factors often limit long-term visual outcomes.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Prosthetic Devices
Background:
- Elderly patients with corneal blindness often have limited treatment options.
- Boston type I keratoprosthesis offers a potential solution for visual restoration.
Purpose of the Study:
- To evaluate the outcomes of Boston type I keratoprosthesis implantation in patients aged 75 years and older.
- To assess visual acuity, device retention, and postoperative complications in this demographic.
Main Methods:
- Retrospective case series of 43 patients (44 eyes) aged 75+ who received Boston type I keratoprosthesis.
- Data collected included preoperative diagnosis, visual acuity, device retention, and complications.
Main Results:
- 82% of patients achieved visual acuity of 20/200 or better postoperatively.
- Median visual acuity improved significantly from 2.6 to 1.0 logMAR at 1 year.
- Device retention was 88.9% at 1 year; common complications included retroprosthetic membrane and cystoid macular edema.
Conclusions:
- Boston type I keratoprosthesis is an effective treatment for corneal blindness in the elderly.
- Non-corneal comorbidities significantly impact long-term visual success, independent of the prosthesis.
