Early Changes in Visual Quality and Corneal Structure after DMEK: Does DMEK Approach Optical Quality of a Healthy Cornea?
Table 1
Visual function parameters in patients undergoing DMEK as measured preoperative and at 1 month and at 6 months postoperative.
Functional parameter
Preoperative
1 month postoperative
P (preoperative vs 1 month postoperative)
6 month postoperative
P (1 month vs 6 months postoperative)
Visual Acuity
VA ETDRS photopic
0.59 (0.33)
0.31 (0.19)
0.013
0.13 (0.09)
0.008
VA ETDRS mesopic
0.75 (0.25)
0.50 (0.22)
0.012
0.36 (0.15)
0.130
Contrast sensitivity
CSV 3cpd
0.46 (0.52)
1.06 (0.61)
0.005
1.49 (0.45)
0.077
CSV 6cpd
0.23 (0.52)
1.17 (0.65)
<0.001
1.33 (0.47)
0.363
CSV12cpd
0.21 (0.41)
0.58 (0.50)
0.031
0.80 (0.46)
0.217
CSV18cpd
0.08 (0.18)
0.29 (0.31)
0.015
0.45 (0.46)
0.264
CSV-M 3cpd
0.44 (0.48)
1.20 (0.48)
0.001
1.52 (0.28)
0.056
CSV-M 6cpd
0.19 (0.44)
1.19 (0.55)
<0.001
1.26 (0.66)
0.401
CSV-M 12cpd
0.13 (0.31)
0.71 (0.67)
0.004
0.76 (0.56)
0.741
CSV-M 18cpd
0.07 (0.18)
0.23 (0.30)
0.022
0.34 (0.28)
0.350
CSV-MG 3cpd
0.21 (0.45)
1.06 (0.58)
0.001
1.46 (0.33)
0.034
CSV-MG 6cpd
0.12 (0.35)
0.83 (0.57)
<0.001
0.84 (0.64)
0.867
CSV-MG 12cpd
0.04 (0.15)
0.43 (0.39)
0.001
0.59 (0.56)
0.434
CSV-MG 18cpd
0.05 (0.35)
0.27 (0.33)
0.002
0.34 (0.28)
0.755
Pelli-Robson
1.00 (0.29)
1.29 (0.18)
0.005
1.48 (0.14)
0.006
P values correspond to comparisons preoperative versus 1 month and 1 month versus 6 months. Bold letters indicate . Asterisks mark Bonferroni values less than 0.003. DMEK, Descemet membrane endothelial keratoplasty; VA, visual acuity; ETDRS, Early Treatment Diabetic Retinopathy Study; CSV, contrast sensitivity vision; cpd, cycles per degree.
