Table 5.

A Summary of Intraclass Correlation Coefficient Analysis of Each Pair-Wise Visual Acuity Measurement Comparison

Pair-Wise Comparison	Eyes (n)	Intraclass Correlation Coefficient (95% CI)	p-value
Near Chart vs ETDRS chart OD	146	0.85 (0.75–0.91)	<0.001
Near Chart vs ETDRS chart OS	149	0.77 (0.63–0.85)	<0.001
Eye Chart app. vs ETDRS chart OD	146	0.88 (0.84–0.91)	<0.001
Eye Chart app. vs ETDRS chart OS	149	0.74 (0.68–0.80)	<0.001
Eye Chart app. vs Near Chart OD	146	0.79 (0.70–0.85)	<0.001
Eye Chart app. vs Near Chart OS	149	0.74 (0.66–0.80)	<0.001

Abbreviations: n, number; CI, confidence interval; ETDRS, Early Treatment Diabetic Retinopathy Study; OD, oculus dexter (right eye); OS, oculus sinister (left eye).