Table 2.

Correlation between dioptric power and red reflex width

	Mean	95% CI	P -value ${}^{*}$
Pupil size	5.81	5.70 to 5.91
Red reflex width			$<$ 0.001
Significant hypermetropia (mm)	2.63	2.42 to 2.84
Significant myopia (mm)	1.94	1.86 to 2.02
Nonsignificant refractive errors (mm)	5.59	5.50 to 5.68
Dioptric power			$<$ 0.001
Significant hypermetropia (D)	1.36	0.94 to 1.78
Significant myopia (D)	–5.98	–6.39 to –5.56
Nonsignificant refractive errors (D)	–1.17	–1.33 to –1.02
${}^{*}$ Spearman correlation.