Table 3.

RNFL thickness and vessel density in each sector.

	Preclinical DR group	Control group	t	P
Peripapillary RNFL thickness
S (μm)	140.97 ± 22.21	138.43 ± 13.20	0.54	0.59
T (μm)	78.00 ± 8.30	86.35 ± 21.93	−2.02	0.04∗
I (μm)	145.29 ± 22.95	146.00 ± 18.67	−0.12	0.90
N (μm)	96.29 ± 17.30	96.70 ± 11.09	−0.10	0.92
Peripapillary vessel density
S (%)	52.44 ± 4.29	54.74 ± 2.73	−2.27	0.027∗
T (%)	52.96 ± 3.82	54.35 ± 6.10	−2.15	0.03∗
I (%)	55.71 ± 13.63	55.91 ± 4.86	−0.07	0.95
N (%)	48.38 ± 4.21	49.30 ± 3.60	−0.86	0.40

S: superior; T: temporal; I: inferior; N: nasal.