Corneal ectasia following deep lamellar keratoplasty.

Keratoconus is a bilateral non-inflammatory corneal ectasia with an incidence of approximately one per 2000 in the general population. Contact lenses are the most common treatment. When contact lenses fail, a surgical approach is necessary for visual rehabilitation. Penetrating keratoplasty has been the traditional and most common mode of treatment and has excellent results. 3 However, more recently, deep lamellar keratoplasty (DLK) is gaining popularity as an alternative option for the surgical management of keratoconus. It has obvious advantages in that endothelial rejection is rare and it is essentially an extraocular procedure. Recurrent keratoconus following penetrating keratoplasty is rare but has been described. 7 We report on the first case of recurrent ectasia following deep lamellar keratoplasty supported by clinical and histological evidence.