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Session Title: Cornea surgical I
Session Date/Time: Tuesday 08/10/2013 | 08:00-10:30
Paper Time: 10:00
Venue: Forum (Ground Floor)
First Author: : M.Dirisamer AUSTRIA
Co Author(s): : J. Parker M. Naveiras V. Liarakos L. Ham K. van Dijk G.
To identify causes of reduced visual acuity after Descemet stripping (automated) endothelial keratoplasty (DSEK/DSAEK), and to determine if such eyes can be successfully repaired with a secondary Descemet membrane endothelial keratoplasty (DMEK).
Non-randomized, prospective study, at a tertiary referral center. Netherlands Institute for Innovative Ocular Surgery, Rotterdam.
Twelve eyes of twelve patients, that underwent secondary DMEK to manage poor visual outcome after initial DSEK/DSAEK, were evaluated with biomicroscopy, Pentacam imaging, and specular and confocal microscopy, before and at 1, 3 and 6 months after DMEK.
Four causes of reduced optical quality of the transplanted host cornea could be identified in DSEK/DSAEK: five eyes (42%) showed large host-Descemet remnants within the visual axis during surgery; six eyes (50%) irregular graft thickness; six eyes subtle stromal waves; and nine eyes (75%) high reflectivity at the donor-to-host interface. After DMEK graft replacement, all corneas cleared and achieved a best corrected visual acuity of ?20/25 (?0.8), except for one with a partial Descemet graft detachment. Pachymetry values decreased from 670 (±112) µm before, to 517 (±57) µm after secondary DMEK. Higher order aberrations (Coma and Trefoil) at the posterior surface tended to be lower (P=0.07) in DMEK grafts than in DSEK/DSAEK grafts.
. Host-Descemet remnants at the donor-to-host interface, interface reflectivity, graft thickness irregularity and donor stromal contraction, may contribute to poor visual outcome after DSEK/DSAEK, without causing permanent host corneal damage, since in most cases complete visual recovery could be achieved by performing a secondary DMEK.
... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented
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