Included series were published 2006 or later (concurrent with our study population), listed in order of cohort size (RE = Reese-Ellsworth classification).
Snellen original stimuli sizes are reported in Snellen fractions (distance from which the participant perceives the letter in meters in the numerator and the distance from which a normally sighted ind
aIncludes the patients too young to receive the visual acuity examination and those with presenting symptoms too serious to apply to the visual acuity examination. bIncludes the patients too young to
