Table 3. Vascular morphological characteristics between DME and non-DME groups in different severity of DR groups.

Characteristics	DME (n=120)	Non-DME (n=119)	P
Vessel angle
Mild	34.15±3.31	33.77±2.76	0.521
Moderate	33.34±2.98	34.13±3.35	0.281
Severe	32.87±2.63	34.67±5.21	0.248
Df
Mild	1.33±0.05	1.34±0.05	0.345
Moderate	1.32±0.05	1.33±0.06	0.704
Severe	1.30±0.05	1.32±0.09	0.736
Vessel density
Mild	1.15±0.48	1.17±0.47	0.867
Moderate	1.08±0.36	1.16±0.43	0.359
Severe	0.96±0.35	1.13±0.68	0.625
Vascular branches
Mild	218.2±116.9	208.4±88.7	0.616
Moderate	194.7±75.1	221.4±83.7	0.149
Severe	187.6±69.8	230.6±135.3	0.523

DME: Diabetic macular edema; Df: Fractal dimension.