Comparing School-Aged Refraction Measurements Using the 2WIN-S Portable Refractor in Relation to Cycloplegic Retinoscopy: A Cross-Sectional Study

Table 3

Reliability and repeatability of 2WIN-S.

Parameters	ICC	95% CI		value	Sw
		Lower	Upper
Spherical equivalent (D)	0.900	0.816	0.939	<0.01	0.61
J0	0.666	0.557	0.748	<0.01	0.30
J45	0.639	0.52	0.728	<0.01	0.31

value <0.05. CI, confidence interval; D, diopter; ICC, intraclass correlation coefficient; J0, (cylinder/2) cos (2 axis); J45, (cylinder/2) sin (2 axis); Sw,within-subject standard deviation.