Early Changes in Visual Quality and Corneal Structure after DMEK: Does DMEK Approach Optical Quality of a Healthy Cornea?
Table 4
Visual quality parameters as obtained with Oculus Pentacam of corneas undergoing Descemet membrane endothelial keratoplasty (DMEK) at six months after surgery compared with healthy controls.
Quality parameter
DMEK
Controls
Anterior cornea
Central density
24.32 (2.92)
23.84 (9.87)
0.099
0–2 mm density
25.21 (5.40)
29.83 (9.30)
0.275
Total density
29.25 (6.52)
36.35 (9.54)
0.052
Km
42.85 (1.50)
44.15 (1.77)
0.058
RMS HOA (µm)
1.50 (1.11)
0.76 (0.21)
0.021
RMS LOA (µm)
3.86 (2.24)
2.42 (0.73)
0.069
RMS total (µm)
4.39 (2.23)
2.54 (0.74)
0.014
Posterior cornea
0–2 mm density
17.60 (2.83)
18.46 (6.51)
0.734
Total density
23.38 (3.52)
26.72 (6.33)
0.234
Km
−6.52 (0.39)
−6.36 (0.24)
0.292
RMS HOA (µm)
0.47 (0.13)
0.25 (0.10)
<0.001
RMS LOA (µm)
1.04 (0.29)
0.67 (0.33)
0.005
RMS total (µm)
1.15 (0.29)
0.72 (0.34)
0.002
Central density has been included in the anterior corneal measurements group. Bold letters indicate . DMEK, Descemet membrane endothelial keratoplasty; Km, mean keratometry; RMS, root mean square; HOA, high-order aberrations; LOA, low-order aberrations; µm, microns.
