The Objective of This Study is to Evaluate the Perfomance of a Photorefraction Device for Screening Ametropia in Children. Eligible Participants Will Undergo Multiple Refractive Error Measurements, Visual Acuity and Strabismus Assessments During a Single Evaluation Visit.

The goal of this clinical trial is to evaluate the performance of a photorefraction screener in terms of sensibility, sensitivity and accuracy on children aged 3 to 8 y.o. The main objectives of the study are: * Evaluate the performances of the device in comparison with the gold standard, i.e. a tabletop refractometer. * Assess the agreement of the measures obtained with the device with those obtained with the gold standard.

Participants after verification of their eligibility and informed consent, participate to a single evaluation visit during which several objective refraction measurements are performed with the investigational device, a tabletop refractometer and a comparable vision screener with and without cyclopegia. Additionally far vision visual acuity, strabismus assessments and subjective refraction measurement are also performed by investigators.