Changes in Corneal Parameters after DMEK Surgery: A Swept-Source Imaging Analysis at 12-Month Follow-Up Time
Table 2
The dynamics of changes in mean keratometry, astigmatism magnitude, astigmatism asymmetry, and higher-order aberration power between the follow-up time points in the different corneal optical zones after Descemet membrane endothelial keratoplasty.
Baseline median (IQR)
1-month median (IQR)
3-month median (IQR)
6-month median (IQR)
12-month median (IQR)
Mean keratometry (D)
Anterior
3 mm OZ
49.96 (4.96)
48.34 (2.85)
48.11 (2.90)
49.02 (2.68)
49.26 (2.68)
6 mm OZ
49.39 (3.60)
47.47 (2.33)
47.47 (2.64)
48.72 (2.19)
48.77 (2.48)
Posterior
3 mm OZ
−6.06 (0.89)
−6.47 (0.40)
−6.37 (0.35)
−6.32 (0.41)
−6.34 (0.31)
6 mm OZ
−6.01 (0.90)
−6.51 (0.37)
−6.35 (0.40)
−6.29 (0.45)
−6.32 (0.29)
Total
3 mm OZ
43.88 (4.46)
42.07 (2.18)
41.92 (2.29)
42.76 (2.21)
42.92 (2.31)
6 mm OZ
43.41 (3.38)
41.17 (2.08)
41.46 (2.18)
42.45 (1.93)
42.58 (2.28)
Mean astigmatism (D)
Anterior
3 mm OZ
1.47 (1.01)
1.58 (1.28)
0.93 (0.83)
0.92 (0.68)
0.88 (0.90)
6 mm OZ
1.37 (0.97)
1.38 (1.25)
0.87 (0.57)
0.83 (0.84)
0.78 (0.81)
Posterior
3 mm OZ
0.30 (0.30)
0.28 (0.20)
0.22 (0.13)
0.19 (0.13)
0.18 (0.14)
6 mm OZ
0.26 (0.2)
0.25 (0.14)
0.21 (0.115)
0.18 (0.09)
0.17 (0.08)
Total
3 mm OZ
1.31 (1.57)
1.63 (1.15)
0.89 (0.825)
0.93 (0.6)
0.835 (0.51)
6 mm OZ
1.55 (1.08)
1.32 (1.08)
0.83 (0.58)
0.89 (0.65)
0.83 (0.755)
Astigmatism asymmetry (D)
Anterior
3 mm OZ
1.11 (1.79)
1.00 (0.59)
0.57 (0.44)
0.50 (0.29)
0.49 (0.30)
6 mm OZ
1.50 (2.44)
1.09 (0.57)
0.74 (0.63)
0.74 (0.41)
0.63 (0.36)
Posterior
3 mm OZ
0.43 (0.54)
0.24 (0.23)
0.18 (0.09)
0.15 (0.1)
0.13 (0.09)
6 mm OZ
0.51 (0.66)
0.30 (0.18)
0.22 (0.10)
0.18 (0.1)
0.15 (0.11)
Total
3 mm OZ
1.41 (1.69)
0.78 (0.66)
0.62 (0.42)
0.51 (0.32)
0.55 (0.39)
6 mm OZ
1.92 (2.53)
1.16 (0.76)
0.87 (0.60)
0.74 (0.46)
0.67 (0.44)
Higher-order aberrations (D)
Anterior
3 mm OZ
0.48 (0.98)
0.34 (0.37)
0.28 (0.19)
0.28 (0.15)
0.22 (0.10)
6 mm OZ
0.48 (0.7)
0.44 (0.56)
0.38 (0.195)
0.36 (0.22)
0.31 (0.125)
Posterior
3 mm OZ
0.18 (0.16)
0.09 (0.05)
0.08 (0.06)
0.08 (0.06)
0.07 (0.05)
6 mm OZ
0.17 (0.14)
0.11 (0.06)
0.085 (0.05)
0.09 (0.04)
0.09 (0.05)
Total
3 mm OZ
0.46 (0.85)
0.37 (0.33)
0.27 (0.15)
0.27 (0.1)
0.21 (0.08)
6 mm OZ
0.53 (0.81)
0.43 (0.55)
0.37 (0.20)
0.35 (0.18)
0.305 (0.095)
Statistically significant values are shown in bold. values are calculated for intervals “baseline-1st month,” “1st month–3rd month,” “3rd month–6th month,” and “6th month–12th month.”
