Analysis of suspected visual impairment risks based on objective refraction in 3-year-old children

To evaluate the relationship between uncorrected visual acuity and non-cycloplegic refractive value among 3-year-old children in a vision screening program in Japan.Retrospective, cross-sectional study.The participants were 1746 Japanese children screened from April 2009 to July 2018, and ranged in age from 36 to 47 months. Visual acuity and handheld refractive values were collected from the clinical records of 3-year-old children in a vision...