Pfäffli OA, et al. - Among 33 patients (3–10 years) with reduced visual acuity and 38 healthy control individuals with age-related normal visual acuity, researchers studied feasibility, reliability and discriminative validity of pseudoisochromatic (PIC) colour vision tests, the Mollon–Reffin minimalist (MRM) test and the Cambridge Colour Test (CCT). Due to amblyopia, binocular maculopathy, or optic neuropathy, visual acuity in patients was reduced. According to this prospective study, in young children with reduced visual acuity, pseudoisochromatic and MRM tests exhibit sufficient feasibility. CCT feasibility in 3–5-year olds is decreased, most likely because of the longer test duration. Colour discrimination thresholds decrease with age independent on visual acuity status, consistent with earlier findings.