Gordon et al identified factors predictive of a penetrating keratoplasty being performed on a patient with keratoconus. The authors are participants in the Collaborative Longitudinal Evaluation of Keratoconus (CLEK) Study and are from multiple universities in the United States.
Patient selection: keratoconus
Factors identifying patients who underwent a penetrating keratoplasty:
(1) young to middle-aged adult (younger, with mean age 35 years)
(2) worse visual acuity
(3) worse vision-related quality of life
(4) poor contact lens comfort
(5) corneal scarring
(6) steeper values on keratometric readings
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