Table 3. Correlation coefficients, mean difference (MD) with 95% confidence intervals (95% CIs), and limits of agreement (LoA) for retinal nerve fibre layer (RNFL) measurements of the optic nerve head obtained with Stratus OCT and Spectralis HRA+OCT.

Region	Correlation	MD (μm) (95% CI)	LoA (μm)
Average	0.73	6.2 (4.3, 8.1)	−4.1, 16.5
Superior	0.87	8.5 (6.1, 11)	−4.7, 21.8
Inferior	0.84	8.1 (5.3, 10.9)	−7.1, 23.3
Nasal	0.74	10.3 (6.9, 13.7)	−7.8, 28.4
Temporal	0.61	22.6 (19.3, 25.9)	4.7, 40.5