Abstract
Purpose: :
To use anterior segment optical coherence tomography (ASOCT) in evaluating the relationship of graft size to lenticule adherence to host cornea in cases of DSAEK for failed penetrating keratoplasties. Previous reports have advocated undersizing the graft because of the risk of graft dislocation.
Methods: :
Patients with previous failed penetrating keratoplasties were selected from a prospective database of patients undergoing DSAEK at a tertiary centre.
Results: :
Twenty patients with previous failed full-thickness grafts underwent DSAEK over a 3 year period. There was graft failure in 1 eyes (5%), and 1 eye had graft detachment. Donor lenticules that were larger than the diameter of the host cornea graft had good adherence. Decentration of the graft contributed to graft dislocation.
Conclusions: :
ASOCT helps establish that lenticules of equal or larger than the diameter of the host cornea graft have good rates of adherence. DSAEK is a good option in rehabilitating failed penetrating cornea grafts.
Keywords: cornea: clinical science • anterior segment • transplantation