Effect of recipient lamellar keratectomy on corneal topography in penetrating keratoplasty.
Recipient tissue weakness is thought to be a cause of the high residual astigmatism that may follow penetrating keratoplasty (PK). In a rabbit model, we investigated the topographic effect of a controlled lamellar keratectomy (6 x 3 x 0.25 mm) on the recipient side following PK. Results from 10 animals indicate an overall flattening of 5 D along the axis of the keratectomy--i.e., the axis of recipient tissue weakness. Our results indicate that recipient corneal integrity may be a factor in corneal transplant topography.
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Y K
YK
Department of Ophthalmology, Louisiana State University Medical Center, Shreveport 71130-3932.
Mahjoub
S B
SB
Reynolds
M D
MD
Hart
J C
JC
D000818:Animals; D001251:Astigmatism / Q000209:etiology; D003315:Cornea / Q000473:pathology* / Q000601:surgery; D015948:Keratoplasty, Penetrating / Q000009:adverse effects*; D011817:Rabbits