Accuracy of Two Novel Self-Contained Darkroom Refractive Screeners Compared with Cycloplegic Retinoscopy and a Traditional Autorefractor in Schoolchildren.

Hyperopia Group and Astigmatism Group As shown in Table 1B , in the hyperopia group, the three devices had significant differences in SE, DS, and DC with CR (P < 0.05), notably, the difference in DS for the Columba 300 was marginally significant (P = 0.016); in the astigmatism group, all devices showed significant differences in SE, DS, and DC from CR (P < 0.001), but YD-SX-A exhibited the smallest mean difference in DC (mean difference −0.19 D).

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