May 2007
Volume 48, Issue 13
ARVO Annual Meeting Abstract  |   May 2007
Boston Keratoprosthesis : A Long-Term Prospective Clinical Study
Author Affiliations & Notes
  • R. J. Peralta
    Ophthalmology, New York University School of Medicine, New York, New York
    Ophthalmology, Manhattan Eye, Ear and Throat Hospital, New York, New York
  • A. J. Kanellopolous
    Ophthalmology, New York University School of Medicine, New York, New York
    Ophthalmology, Institute, Athens, Greece
  • Footnotes
    Commercial Relationships R.J. Peralta, None; A.J. Kanellopolous, None.
  • Footnotes
    Support None.
Investigative Ophthalmology & Visual Science May 2007, Vol.48, 1895. doi:
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      R. J. Peralta, A. J. Kanellopolous; Boston Keratoprosthesis : A Long-Term Prospective Clinical Study. Invest. Ophthalmol. Vis. Sci. 2007;48(13):1895. doi:

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose:: To evaluate the safety, efficacy and long term complications of the Boston Keratoprosthesis artificial cornea procedure in 25 cases of severe external disease and/or repeat graft failure.

Methods:: 25 cases of 20 patients were evaluated for uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA), corneal clarity, and complications 14 to 114 months (mean 38 months) post-transplantation.

Results:: Preoperative diagnoses and (number of cases) included ocular cicatricial pemphigoid (OCP, 11), repeat graft failure (8) and ocular burn (6). At 12 months post-transplantation, all keratoprostheses remained clear and UCVA had improved from 0.05 (0.01 to 0.1) to 0.2 (0.05 to 1). Subsequently, 23 of 25 remained clear at 24 months, 15 of 19 at 36 months and 11 of 16 at 48 months. Severe post-transplantation complications included keratoprosthesis-related corneal melt (8), endophthalmitis (4), macular disease (pucker, exudative AMD; 3), retinal detachment (2) and extrusion (2). 5 cases required retransplantation once, and 1 case required retransplantation twice.

Conclusions:: The Boston Keratoprosthesis offers a significant visual rehabilitation option for patients with severe ocular surface disease. The safety and efficacy must be regarded with the severity of eye disease, alternate options for visual rehabilitation and requirements for pragmatic functionality. Severe post-operative complications are not uncommon, but may be managed effectively with close observation and preventive measures.

Keywords: transplantation • clinical (human) or epidemiologic studies: outcomes/complications • cornea: clinical science 

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