Abstract
To evaluate the outcomes of repeat corneal transplantation, either penetrating keratoplasty (PKP) or Descemet’s stripping automated endothelial keratoplasty (DSAEK), for penetrating keratoplasty grafts which failed due to corneal edema. The charts of 24 eyes with failed PKP grafts, due to corneal edema, which underwent a repeat corneal transplant (PKP in 17 eyes [Group 1] and DSAEK in seven eyes [Group 2]) between 2003 and 2007 were retrospectively reviewed. There was no statistically significant difference in the median postoperative visual acuity between the two groups at 1, 2, or 3 years. In Group 1, two (18%) eyes had a final visual acuity ≥20/40, in contrast to four (80%) eyes in Group 2, which was statistically significant (P = 0.038). Seven (41%) of the Group 1 eyes developed postoperative complications compared to only one (14%) eye in Group 2. Eleven (65%) of the Group 1 eyes and five (71%) of Group 2 eyes had clear grafts on the last examination. There was no statistically significant difference in the graft survival rate for Group 1 versus Group 2 at 3 years (57.9% vs 68.6%, P = 0.507). There was a trend towards better postoperative visual acuity, a lower postoperative complication rate, and a higher graft survival rate in eyes that underwent DSAEK rather than repeat PKP for graft failure secondary to corneal edema. Given this small, retrospective study, future studies comparing repeat PKP with DSAEK are warranted to determine which procedure allows for improved outcomes.
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Kitzmann, A.S., Wandling, G.R., Sutphin, J.E. et al. Comparison of outcomes of penetrating keratoplasty versus Descemet’s stripping automated endothelial keratoplasty for penetrating keratoplasty graft failure due to corneal edema. Int Ophthalmol 32, 15–23 (2012). https://doi.org/10.1007/s10792-012-9518-4
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DOI: https://doi.org/10.1007/s10792-012-9518-4