Assessment of visual evoked potentials in patients eligible for penetrating keratoplasty

Corneal opacities can obstruct ophthalmology examination in patients before penetrating keratoplasty (PK).To assess the usefulness of visual evoked potentials (VEPs) in estimating postoperative visual acuity (VA) in patients eligible for (PK) with opaque cornea in 1 eye and good VA in the fellow eye.In this observational study, the mean age of 52 males and 48 females was 57.17 ± 15.99 (21-87 years old). A total of 100 patients eligible for PK underwent an ophthalmological examination including VA and a VEP examination. The P2/P2 ratio was calculated. The correlation coefficient of the VA and the P2/P2 ratio was evaluated 1, 6, and 12 months after PK.A positive correlation of the P2/P2 ratio and VA 1, 6, and 12 months after PK were observed.VEPs including the P2/P2 ratio can be useful in estimating postoperative VA in patients eligible for PK.