Abstract
Computerized video keratography has greatly enhanced our understanding of post-penetrating keratoplasty (PK) corneal topography. Tight and loose suture points, irregular areas of the graft-host junction, and asymmetric flat and steep areas can be clearly defined by corneal mapping. Frequently, corneal transplant eyes show irregular, asymmetric, nonorthogonal astigmatism caused by uneven wound healing and suture closing. Corneal relaxing incisions offer a viable alternative to returning the post-PK cornea to a more symmetrical topography. Corneal topographical mapping can provide the appropriate shape information necessary to guide the placement of corneal relaxing incisions on the corneal surface.
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