Quantification of Microvascular Density of the Optic Nerve Head in Diabetic Retinopathy Using Optical Coherence Tomographic Angiography

Table 1

Demographic characteristics of patients and healthy controls.

Characteristics	Group				value
	Healthy controls	No DR	Mild-to-moderate NPDR	Severe NPDR
Patients, no.	38	45	36	40
Eyes, no.	73	80	68	63
Age, y					0.246
Mean ± SD	55.0 ± 16.0	58 ± 12.0	57.9 ± 10.8	60.7 ± 8.5
Sex					0.434
Female, no. (%)	19 (50%)	15 (25%)	13 (36.1%)	17(42.5%)
Male, no. (%)	19 (50%)	30 (75%)	23 (63.9%)	23(57.5%)
DM duration, y					0.207
Mean ± SD	N/A	12.2 ± 7.3	13.0 ± 7.1	15.0 ± 6.9
HbA1c, %					0.704
Mean ± SD	N/A	8.7 ± 1.7	8.9 ± 1.4	9.1 ± 2.1
LogMAR BCVA					<0.01
Mean ± SD	0.04 ± 0.07	0.12 ± 0.2	0.29 ± 0.30	0.54 ± 0.37
Anti-VEGF
Treatment	N/A	0 (0%)	3 (4.4%)	7 (11.1%)

DR, diabetic retinopathy; NPDR, nonproliferative diabetic retinopathy; DM, diabetes mellitus; HbA1c, hemoglobin A1c; BCVA, best-corrected vision acuity; VEGF, vascular endothelium growth factor.