Figure 1.

Illustrates details of the peripheral ancillary retinoscope component (P-ARC). (A) Schematic diagram showing the peripheral refractive error measurement technique at the temporal 22° and nasal 22° eccentricities. (B) Design of P-ARC with two light sensors placed inside the tube-like structures. (C) Trial frame with P-ARC, and the examiner performing peripheral refraction on a participant with the guidance from light sensors using a retinoscope. See Supplementary Video for technique. *Informed consent was obtained for the photograph.