Fig. 1.

(a) Onset of endothelial rejection line in untreated allograft (▪) and autograft (□) corneas. Corneal allografts were examined every 2 days for evidence of an endothelial rejection line. All 15 allografts rejected, with a median time to appearance of the endothelial line of 22 days. None of five autografts showed evidence of endothelial rejection. (b) Pachymetry of corneal allografts and autografts. Corneal thickness measurements (pachymetry) on nine of the allografts (——) and in three of five autografts (- - - - -) in (a). All the allografts showed increased thickness and opacity associated with endothelial rejection, due to failure of the corneal endothelial pump function. The autografts did not undergo rejection and remained thin and transparent.