Autism and congenital blindness.
Born-blind children can mirror autism so closely that only careful checks of social warmth separate the two.
01Research in Context
What this study did
The team looked at kids who were born blind and also showed autism-like traits.
They compared these children to sighted kids with autism.
Doctors watched play, talked to parents, and scored the children on social, language, and repetitive behaviors.
What they found
Both groups looked almost the same on most autism signs.
The big clue was social-emotional warmth: blind kids often still reached for people, while sighted autistic kids did not.
Without that clue, the two groups were easy to mix up.
How this fits with other research
Stevenson et al. (2025) later rounded up 13 newer studies and found no agreed tool for spotting autism in blind children.
They echo Hagopian et al. (1999): you must tweak tests and watch for small warmth cues.
Caçola et al. (2017) showed a different look-alike problem; ASD and motor-coordination disorder can seem alike yet need different plans.
Together these papers warn: when disabilities overlap, single-checklist diagnosis fails.
Why it matters
If you assess a child who is blind, slow down. Use hands-on play, listen for voice warmth, and ask if the child seeks cuddles. These tiny signs keep you from an autism label that may not fit.
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02At a glance
03Original abstract
The nature of autism in congenitally blind children has long been a source of interest and perplexity. A group of nine congenitally blind children with an autism-like syndrome were closely matched on chronological age and verbal mental age with nine sighted autistic children, and were compared on the Childhood Autism Rating Scale (Schopler, Reichler, & Renner, 1986) and the Behavior Checklist for Disordered Preschoolers, together with the Play Items for Disordered Preschoolers (Sherman, Shapiro, & Glassman, 1983). A checklist of clinical features characteristic of autism (derived from DSM-III-R) was also completed through an interview with teachers. There was substantial similarity between the groups, but also suggestive evidence of possible group differences, specifically in the domain of social-emotional responsiveness. Research on the psychological development of congenitally blind children promises to yield insights into the nature of autism itself.
Journal of autism and developmental disorders, 1999 · doi:10.1023/a:1025918616111