After keratoplasty , quality of life was correlated with uncorrected visual acuity at 1 year ( r = -0.38 ; P = 0.001 ) and at 3 years ( r = -0.36 ; P = 0.02 ) , with disability glare at 3 years ( r = -0.41 ; P = 0.02 ) , and with best-corrected visual acuity at 6 months ( r = -0.34 ; P = 0.03 ) , but not thereafter .