Vision Impairment and Hearing Loss in Autism Children

Childhood vision impairment, hearing loss and co-occurring autism spectrum disorder.

http://www.ncbi.nlm.nih.gov/pubmed/24060256

Abstract

BACKGROUND:

Limited population-based data on prevalence of childhood vision impairment (VI) and hearing loss (HL), and their co-occurrence with autism spectrum disorder (ASD) exists.

OBJECTIVE:

To examine prevalence and characteristics of VI, HL and co-occurring ASD among 8-year-olds in metropolitan Atlanta 2000-2008.

METHODS:

We used data from the population-based Metropolitan Atlanta Developmental Disabilities Surveillance Program. Prevalence, birth and parental characteristics, presence and severity of other co-occurring developmental disabilities, and age of earliest identification of ASD, were examined for children with VI and HL, by co-occurring ASD.

RESULTS:

VI and HL prevalences were 1.2 and 1.3 per 1000 8-year-olds, respectively.

Approximately 6-7% of children with VI or HL had co-occurring ASD.

Children with VI or HL with co-occurring ASD differed from those without co-occurring ASD by select birth characteristics and the presence of other co-occurring DDs.

The median age of earliest known ASD diagnosis was significantly later among children with VI and ASD compared to children with ASD without VI (79 vs. 56 months).

Children with HL and ASD were first evaluated by a community provider significantly earlier than those with ASD without HL (40 vs. 50 months).

CONCLUSIONS:

The frequency of co-occurring ASD with VI and HL is higher than the population prevalence of ASD.

The significant delays in diagnosis of ASD in children with VI and lack of earlier diagnosis of ASD among children with HL despite earlier evaluation highlight the importance of developing screening tools for early identification of ASD among children with VI and HL.

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Further Readings of Interest

Key findings: Childhood vision impairment, hearing loss and co-occurring autism spectrum disorder

http://www.cdc.gov/ncbddd/developmentaldisabilities/features/keyfinding-co-occuring.html

Main findings:

Vision Impairment

  • About 1 in 830 children in metro Atlanta has vision impairment.
  • Approximately 7% of the children with vision impairment also had autism spectrum disorder compared with about 1% of children in metro Atlanta with autism spectrum disorder overall.
  • Compared to children with vision impairment without an autism spectrum disorder, the children with vision impairment and autism spectrum disorder were significantly more likely to:
    • Be born too early
    • Be born too small
    • Have intellectual disability
  • The children with vision impairment and autism spectrum disorder were first evaluated by a community provider at about the same age as children without vision impairment. However, children with vision impairment were diagnosed with autism spectrum disorder later than those without vision impairment (6 years and 7 months compared to 4 years and 8 months).

Hearing Loss

  • About 1 in 770 children in metro Atlanta has hearing loss.
  • About 6% of the children with hearing loss also had autism spectrum disorder compared with about 1% of children in metro Atlanta with autism spectrum disorder overall.
  • Compared to children with hearing loss without an autism spectrum disorder, the children with hearing loss and autism spectrum disorder were more likely to:
    • Be boys
    • Have intellectual disability and/or cerebral palsy
  • The children with hearing loss and autism spectrum disorder were first evaluated by a community provider earlier than children without hearing loss (3 years and 4 months compared with 4 years and 2 months, respectively). However, both groups were diagnosed with autism spectrum disorder at about the same age (4 years and 7 months).
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