Table 4.
Choroidal parameters in PRP-untreated and PRP-treated NPDR eyes
| PRP-untreated NPDR | PRP-treated NPDR | P value | |
|---|---|---|---|
| Number of eyes (n) | 24 | 17 | |
| SCT (um), mean ± SD | 217.29 ± 14.07 | 214.94 ± 8.78 | P = 0.068* |
| Choroid vascular parameters, mean ± SD | |||
| TCA in mm2 | 0.86 ± 0.09 | 0.79 ± 0.12 | P = 0.160* |
| LA in mm2 | 0.54 ± 0.08 | 0.50 ± 0.11 | P = 0.394* |
| SA in mm2 | 0.31 ± 0.05 | 0.29 ± 0.06 | P = 0.208* |
| L/C ratio | 0.63 ± 0.05 | 0.63 ± 0.03 | P = 0.204* |
PRP, panretinal photocoagulation; PRP, panretinal photocoagulation; NPDR, non-proliferative diabetic retinopathy; SCT, subfoveal choroidal thickness; SD, standard deviation; TCA, total choroidal area; LA, luminal area; SA, stromal area; L/C ratio, the ratio of the luminal to choroidal area
*: Statistical significance tested by Independent t-test