Pupillary measurements and anisocoria in Chinese preschoolers 3-4Â years of age screened using the plusoptiX A12C

The Plusoptix photoscreener is a useful tool for obtaining pupillary measurements and detecting anisocoria in a screening setting. For Chinese preschoolers 3-4 years of age the mean pupil diameter and distance were 5.9 and 50.1 mm, respectively, with sex-related difference; anisocoria of 0.5-0.9 mm is present in 7.8% of children.