The effect of suture depth on outflow facility in penetrating keratoplasty
T. J. Zimmerman, T. Krupin, W. Grodzki and S. R. Waltman
Outflow facility was measured in human eye bank eyes following penetrating
keratoplasty (PKP) and cataract extraction. After measuring baseline
outflow facility, a PKP and lens extraction was performed with the corneal
button replaced by both interrupted "through-and-through" sutures and a
conventional mid-to-deep stromal running suture. Outflow facility was
unchanged from baseline with both sutures. However, following removal of
through-and-through sutures outflow facility decreased 37%. This same
suturing procedure was repeated in a second group of phakic eyes in which
suture depth did not influence outflow facility.
