Table 3 Comparison of the extent of variation of indicators between the two groups, Mean (SD)
Indicator | Fully self-service fundus photography (n = 34) | Traditional fundus photography(n = 31) | Total(n = 65) | P-value* |
|---|---|---|---|---|
Extent of variation | Â | Â | Â | Â |
Vascular fractal dimension | 1.28 (0.9) | 1.19 (1.01) | 1.24 (0.95) | 0.57 |
Average vascular curvature | 0 (0) | 0 (0) | 0 (0) | 0.39 |
Mean vascular curvature within 0.5–1.0PD | 9.2 (6.57) | 10.27 (10.12) | 9.71 (8.4) | 0.96 |
CRAE within 0.5PD–1.0PD | 6.38 (5.42) | 8.67 (8.2) | 7.47 (6.93) | 0.39 |
PRAE within 1.5PD–2.0PD | 5.77 (4.67) | 4.56 (3.5) | 5.19 (4.16) | 0.38 |
CRVE within 0.5PD–1.0PD | 4.77 (4.85) | 5.01 (4.4) | 4.88 (4.61) | 0.56 |
PRVE within 1.5PD–2.0PD | 5.65 (4.18) | 7.19 (6.62) | 6.38 (5.49) | 0.46 |
CAVR within 0.5PD–1.0PD | 6.9 (6.06) | 9.08 (8.12) | 7.94 (7.15) | 0.39 |
PAVR within 1.5PD–2.0PD | 7.63 (5.67) | 7.97 (6.59) | 7.79 (6.08) | 0.99 |
Optic disc area (µm2) | 2.82 (2.8) | 2.01 (1.54) | 2.43 (2.3) | 0.21 |
Optic disc horizontal diameter (µm) | 1.53 (1.51) | 1.27 (0.98) | 1.4 (1.28) | 0.59 |
Optic disc vertical diameter (µm) | 1.71 (1.31) | 1.21 (0.83) | 1.47 (1.13) | 0.16 |
Optic cup area (µm2) | 13.94 (16.27) | 10.01 (9.86) | 12.07 (13.64) | 0.61 |
Optic cup horizontal diameter (µm) | 8.33 (10.5) | 5.83 (5.95) | 7.14 (8.66) | 0.52 |
Optic cup vertical diameter (µm) | 6.54 (6.51) | 4.5 (4.2) | 5.57 (5.58) | 0.27 |