Figure 1.

 Indications for penetrating keratoplasty (PK), 1990–1999. Regraft (n = 321, 40.9%) was the most common indication for PK. Keratoconus was the second most common diagnosis (n = 118, 15%), followed by Fuchs’ endothelial dystrophy (n = 73, 9.3%), pseudophakic bullous keratopathy (n = 60, 7.6%), viral keratitis (n = 46, 5.9%), and other dystrophies (n = 28, 3.6%). These six indications account for 82.3% of indications for PK. Aphakic bullous keratopathy, injuries, interstitial keratitis, and ulcerative keratitis accounted for most of the remaining cases (n = 138, 17.6%).