Objective: To compare the outcomes of Boston keratoprosthesis (KPro) type I implantation between patients who are legally blind versus sighted in the contralateral eye.
Design: Single centre retrospective comparative case series.
Participants: Patients who underwent Boston KPro type I implantation between 2008 and 2017.
Methods: Single-center retrospective comparative case series. Patients were divided into 2 groups based on the preoperative best-corrected visual acuity (BCVA) in the contralateral eye: group I (>20/200) and group II (20/200).
Main Outcome Measures: Postoperative BCVA, device retention, and complications.
Results: Group I (56 eyes) and group II (53 eyes) had similar demographics, median preoperative BCVA (hand movements) in the operated eye, and median duration of postoperative follow-up (76.92 vs 85.6 months, respectively). Final postoperative BCVA of the operated eye was statistically better in group I compared with group II (20/400 and hand movements, respectively, p = 0.03). There was no statistical significance in device retention mean survival time. The most common complication in both groups was retroprosthetic membrane. Cystoid macular edema occurred more frequently in group I (p = 0.004), whereas retinal detachment was more common in group II (p = 0.052).
Conclusions: Most patients who underwent Boston KPro type I implantation experienced an improvement in their vision, with final BCVA being superior in the unilateral blind group. Despite similar complication rates and device retention, there are additional socioeconomic factors that need to be considered in sighted individuals. Because the prognosis is tied to the underlying etiology, it is important to recognize that some diagnoses may influence a better outcome.
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| http://dx.doi.org/10.1016/j.jcjo.2020.08.011 | DOI Listing |
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