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Table 1 Optic nerve head and peripapillary superficial vascular density and flow of eyes at various diabetic stages compared to normal eyes (N = 176)

From: Vascular density of optic nerve head in diabetic retinopathy using optical coherence tomography angiography

Groups NL
(37 eyes)
(M ± SD)
NDR (35 eyes)
(M ± SD)
NPDR (58 eyes)
(M ± SD)
PDR (465 eyes)
(M ± SD)
p-value
Age (years) 53.0 ± 0.9 59.0 ± 1.1 56.0 ± 1.1 57.1 ± 1.1 0.074
(%) OD 19 (51.4) 17 (48.6) 37 (53.4) 23 (50) 0.971
Sex-male (%) 23 (62.2) 11 (31.4) 21 (36.2) 21 (45.7) 0.034
BCVA (decimal) 0.98 ± 0.00 0.91 ± 0.01 0.62 ± 0.03 0.64 ± 0.04 < 0.001
LOG MAR 0.02 ± 0.00 0.09 ± 0.01 0.42 ± 0.13 0.52 ± 0.06 0.001
The last FBS (mg/dl) All < 100 163.8 ± 6.5 221.2 ± 9.8 231.52 ± 12.0 < 0.001
Duration of diabetes mellitus (years) 10 ± 1.1 11.8 ± 0.7 15.5 ± 0.9 < 0.001
Hypertension number (%) 2 (5.4%) 15 (46.9%) 26 (46.4%) 14 (48.4%) < 0.001
Hyperlipidemia number (%) 0 (05%) 12 (37.5%) 27 (48.2%) 17 (58.6%) < 0.001
  1. P values less than 0.05 were considered statistically significant
  2. BCVA: Best corrected visual acuity; DME: Diabetic macular edema; FBS: Fasting blood sugar; NDR: No diabetic retinopathy; NL: Normal; NPDR: Nonproliferative diabetic retinopathy; PDR: Proliferative diabetic retinopathy