Table 3.

Intraclass correlation coefficient with 95% confidence interval and significance

	Intraclass correlation coefficient	95% CI		Significant (P)
		Lower bound	Upper bound
EyeChart versus Snellen
Total	0.982	0.966	0.989	<0.001
Right eye	0.982	0.965	0.989	<0.001
Left eye	0.981	0.964	0.989	<0.001
Refractive errors	0.964	0.924	0.980	<0.001
Cataract	0.926	0.791	0.968	<0.001
Peek Acuity versus Snellen
Total	0.980	0.965	0.988	<0.001
Right eye	0.981	0.962	0.989	<0.001
Left eye	0.980	0.965	0.987	<0.001
Refractive errors	0.951	0.764	0.981	<0.001
Cataract	0.864	0.232	0.958	<0.001

CI=Confidence interval