Accuracy of self-refraction using a portable device based on badal optics, iREF, in children in southern China: A cross-sectional study

Key Points

• The spherical equivalent measured by the portable iREF device shows high consistency with cycloplegic refraction, indicating its accuracy.
• Accuracy of self-refraction decreases significantly in children with high refractive errors, highlighting a limitation in its use.
• Analysis involved a cross-sectional method focusing on children's vision in southern China, ensuring diverse data from different vision conditions.
• The findings support the potential for self-refraction tools in regular eye care, but caution is needed for those with severe vision issues.

Abstract