Table 2.

Intra- and inter-visit repeatability of RVD in healthy subjects and low teens-NTG.

	Intra-visit repeatability				Inter-visit repeatability
	ICC (lower–upper 95% CI)				ICC (lower–upper 95% CI)
	Total subjects	Healthy subjects	Low teens-NTG	P-value*	Total subjects	Healthy subjects	Low teens-NTG	P-value*
Peripapillary RVD
ONH	0.936 (0.836–0.981)	0.924	0.957	0.511	0.755 (0.671–0.947)	0.714	0.827	0.206
pSuperior	0.948 (0.737–0.994)	0.914	0.967	0.456	0.898 (0.867–0.922)	0.865	0.925	0.535
pInferior	0.933 (0.827–0.980)	0.949	0.922	0.627	0.911 (0.705–0.982)	0.963	0.853	0.408
pNasal	0.835 (0.617–0.948)	0.865	0.797	0.225	0.833 (0.637–0.964)	0.842	0.935	0.478
pTemporal	0.874 (0.746–0.986)	0.884	0.870	0.258	0.844 (0.730–0.923)	0.876	0.812	0.400
Macular RVD
Fovea	0.948 (0.737–0.994)	0.914	0.967	0.456	0.851(0.740–0.927)	0.884	0.821	0.198
mSuperior	0.947 (0.913–0.980)	0.956	0.967	0.598	0.898 (0.786–0.965)	0.914	0.877	0.306
mInferior	0.863 (0.822–0.896)	0.874	0.855	0.478	0.882 (0.704–0.987)	0.866	0.942	0.274
mNasal	0.890 (0.858–0.916)	0.914	0.879	0.104	0.806 (0.673–0.903)	0.832	0.794	0.258
mTemporal	0.907 (0.709–0.981)	0.914	0.899	0.627	0.825 (0.670–0.918)	0.842	0.805	0.188

*As analyzed by repeated-measures ANOVA between Healthy and POAG groups, respectively.

ICC = intraclass correlation coefficient; CI = coefficient interval; RVD = retinal vessel density; ONH = optic nerve head.