Table 7.

Correlation between glycemic control (HbA1c) and peripapillary RNFLT in 4 quadrants

Parameters (mean)	r (Pearson’s correlation)	p-value
OD RNFLT
Superior (µm)	−0.490	0.000**
Inferior (µm)	−0.189	0.138
Temporal (µm)	0.076	0.555
Nasal (µm)	−0.129	0.314
OS RNFLT
Superior (µm)	−0.392	0.002**
Inferior (µm)	−0.060	0.640
Temporal (µm)	0.025	0.844
Nasal (µm)	−0.068	0.597

Note:

^**Statistically significant value at p<0.01.

Abbreviations: HbA1c, glycosylated hemoglobin; OD, right eye; OS, left eye; RNFLT, retinal nerve fiber layer thickness.