Table 2.
OCT parameters between healthy controls and diabetes group
| Control | DM | P value | |
|---|---|---|---|
| Number of eyes (n) | 38 | 66 | |
| RNFL thickness (um), median (IQR) | 11 (10,12.25) | 11 (10,13) | P = 0.407# |
| Retinal thickness (um), mean ± SD | 240.58 ± 20.64 | 238.85 ± 15.33 | P = 0.654* |
| CT (um), mean ± SD | |||
| Subfoveal | 212.63 ± 11.99 | 213.21 ± 19.02 | P = 0.849* |
| Nasal | 233.03 ± 16.69 | 234.05 ± 19.57 | P = 0.788* |
| Temporal | 216.95 ± 19.32 | 219.71 ± 20.61 | P = 0.502* |
| Choroid vascular parameters | |||
| TCA in mm2, mean ± SD | 0.81 ± 0.14 | 0.85 ± 0.08 | P = 0.086* |
| LA in mm2, mean ± SD | 0.54 ± 0.09 | 0.54 ± 0.07 | P = 0.825* |
| SA in mm2, mean ± SD | 0.26 ± 0.07 | 0.31 ± 0.04 | P < 0.001*,† |
| L/C ratio | 0.68 ± 0.06 | 0.63 ± 0.04 | P < 0.001*,† |
OCT, optical coherence tomography; IQR, interquartile range; SD, standard deviation; CT, choroidal thickness; TCA, total choroidal area; LA, luminal area; SA, stromal area; L/C ratio, the ratio of the luminal to choroidal area
*: P values were calculated using the Independent t-test
#: P values were calculated using the Mann-Whitney U test
†: Significant difference between mean values of control eyes and DM eyes