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Post-surgical visual outcome and complications in Boston type 1 keratoprosthesis
G Muñoz-Gutierrez1, J Alvarez de Toledo, R I Barraquer
1Institut Universitari Barraquer, Universitat Autònoma de Barcelona, Barcelona, Spain. mdgera@hotmail.com
Archivos De La Sociedad Espanola De Oftalmologia
|February 26, 2013
Summary
Boston type 1 keratoprosthesis (KPro1) implantation improved vision for most patients. However, those with prior surgeries or systemic conditions like Stevens-Johnson syndrome face higher risks of sight-threatening complications.
Area of Science:
- Ophthalmology
- Ophthalmic Surgery
Background:
- Boston type 1 keratoprosthesis (KPro1) is an option for patients with severe corneal disease.
- High rates of graft failure and rejection necessitate alternative surgical solutions.
Purpose of the Study:
- To evaluate the visual outcomes of Boston type 1 keratoprosthesis (KPro1) implantation.
- To identify serious sight-threatening post-operative complications associated with KPro1.
Main Methods:
- Retrospective analysis of clinical records for patients undergoing Boston keratoprosthesis implantation (BKI) between May 2006 and February 2011.
- Inclusion of 41 eyes from 37 patients in the final analysis.
Main Results:
- Mean best-corrected visual acuity (BCVA) improved from 2.05 logMAR pre-operatively to 1.16 logMAR post-operatively.
- The most frequent complication was retroprosthetic membrane (RPM) formation (53.65%), requiring treatment in 63.63% of cases.
- Other complications included chorioretinal adhesion (26.82%) and infectious complications (17.07%), such as keratitis and endophthalmitis.
Conclusions:
- Boston keratoprosthesis implantation (BKI) offers an effective alternative for patients with complex ocular conditions and high risk of corneal graft rejection.
- Patients with a history of multiple ocular surgeries and systemic autoimmune diseases (e.g., Stevens-Johnson syndrome, Lyell syndrome) or diabetes mellitus are at increased risk for severe complications.
- Close monitoring and timely intervention are crucial for managing complications like RPM, chorioretinal detachment, and infections.
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