Crowding depends on contrast.
Previous studies of visual "crowding" in children have been restricted to the use of high contrast optotypes. In this study, visual acuity was measured in a group of 30 normally sighted children using high (96%), medium (11%), and low (4%) contrast Snellen charts and isolated letter cards. The crowding effect was found to be less for low contrast letters than for high contrast letters.
Kothe
A C
AC
Department of Ophthalmology, University of Toronto, Ontario, Canada.
Regan
D
D
D002648:Child; D002675:Child, Preschool; D015350:Contrast Sensitivity / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D014787:Vision Tests / Q000379:methods; D014792:Visual Acuity / Q000502:physiology*