Table 3
Retrobulbar circulatory parameters of patients with and without diabetic retinopathy progression during their first and last colour Doppler imaging measurement
| DR non-progression | DR progression | ||||||
|---|---|---|---|---|---|---|---|
| (cm/s) | 1st measurement | Last measurement | p Value | 1st measurement | Last measurement | p Value | |
| CRA = central retinal artery; CRV = central retinal vein; PCA = posterior ciliary artery; PSV = peak systolic velocity; EDV = end diastolic velocity; MV = mean velocity; *statistically significant difference. | |||||||
| CRA | PSV | 7.2 (4.2∼9.6) | 7.2 (4.4∼10.3) | 0.29 | 6.7 (3.9∼9.8) | 7.0 (4.4∼10.3) | 0.62 |
| EDV | 1.9 (0.7∼2.6) | 1.8 (0.9∼3.1) | 0.99 | 1.8 (0.9∼3.2) | 1.9 (0.9∼2.6) | 0.77 | |
| RI | 0.75 (0.60∼0.89) | 0.74 (0.66∼0.88) | 0.61 | 0.72 (0.53∼0.82) | 0.73 (0.55∼0.79) | 0.95 | |
| CRV | PSV | 5.1 (2.6∼9.6) | 5.5 (3.0∼12.3) | 0.28 | 4.6 (3.2∼7.0) | 5.6 (3.5∼9.1) | 0.003* |
| EDV | 3.0 (1.8∼4.0) | 3.2 (1.9∼4.7) | 0.51 | 3.0 (2.3∼3.7) | 3.4 (2.3∼4.4) | 0.04* | |
| RI | 0.38 (0.23∼0.58) | 0.42 (0.28∼0.70) | 0.50 | 0.40 (0.17∼0.52) | 0.43 (0.20∼0.56) | 0.02* | |
| PCA | PSV | 8.6 (4.9∼17.2) | 7.9 (4.7∼19.4) | 0.73 | 7.9 (5.4∼15.5) | 7.9 (4.0∼14.5) | 0.65 |
| EDV | 2.5 (1.8∼5.6) | 2.1 (1.9∼4.4) | 0.57 | 2.3 (0.7∼4.4) | 2.3 (1.8∼4.2) | 0.89 | |
| RI | 0.70 (0.56∼0.82) | 0.68 (0.56∼0.89) | 0.69 | 0.70 (0.48∼0.91) | 0.71 (0.50∼0.86) | 0.88 | |
