Optical Coherence Tomography Biomarkers of the Outer Blood—Retina Barrier in Patients with Diabetic Macular Oedema
Table 2
RPE thickness and volume in each ETDRS macular map quadrant.
RPE
Control
NPDR-DMO
PDR-DMO
Kruskal-Wallis
Central subfield (μm)
0.026
Central minimum (μm)
<0.00001
Central maximum (μm)
<0.00001
Central volume (mm3)
0.972
Temporal inner quadrant (μm)
0.173
Temporal inner volume (mm3)
0.993
Nasal inner quadrant (μm)
0.0005
Nasal inner volume (mm3)
0.890
Superior inner quadrant (μm)
0.0002
Superior inner volume (mm3)
0.928
Inferior inner quadrant (μm)
0.0017
Inferior inner volume (mm3)
0.02
0.956
Temporal outer quadrant (μm)
0.277
Temporal outer volume (mm3)
0.798
Nasal outer quadrant (μm)
0.020
Nasal outer volume (mm3)
0.504
Superior outer quadrant (μm)
13.8 ± 1.4
0.009
Superior outer volume (mm3)
0.0728 ± 0.0085
0.708
Inferior outer quadrant (μm)
0.120
Inferior outer volume (mm3)
0.832
Average thickness (μm)
0.316
Total volume (mm3)
0.758
Internal quadrant (μm)
<0.00001
External quadrant (μm)
0.165
The results are expressed as . The italicized values indicate a statistically significant difference between the groups: . RPE: retinal pigment epithelium; NPDR-DMO: nonproliferative diabetic retinopathy-diabetic macular oedema; PDR-DMO: proliferative diabetic retinopathy-diabetic macular oedema.
