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Developmental setback in severe visual impairment

H D Cass¹, P M Sonksen, H R McConachie

¹Wolfson Centre, Neurosciences Unit, Institute of Child Health, London.

Archives of Disease in Childhood

|March 1, 1994

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Severe visual impairment in children can lead to developmental setbacks. Totally blind children face a significantly higher risk of developmental delay compared to those with some vision.

Area of Science:

Ophthalmology
Developmental Pediatrics
Neuroscience

Background:

Severe visual impairment in children can complicate development, even in those with initially normal cognitive potential.
The prevalence, diagnostic specificity, clinical presentation, and contributing factors of developmental setback in visually impaired children require investigation.

Purpose of the Study:

To systematically investigate developmental setback in children with severe visual impairment.
To identify risk factors and clinical characteristics associated with developmental delays in this population.

Main Methods:

Retrospective case review of 102 children (under 16 months at initial assessment, normal development, no additional disabilities, followed to at least 2.5 years) attending a developmental vision clinic.
Categorization of children based on visual impairment severity: total blindness, initial blindness with improvement, and better vision.

Related Experiment Videos

Analysis of developmental outcomes, focusing on setbacks in the second or third year of life.

Main Results:

Developmental setback occurred in 31% of totally blind children (n=32), 4% of those with initial blindness and visual improvement (n=25), and 0% of children with better vision (n=49).
Totally blind children demonstrated a significantly greater risk of developmental setback.
Affected children often had visual diagnoses involving the central nervous system and 60% experienced significant social adversity.

Conclusions:

Total blindness is a significant risk factor for developmental setback in young children.
Adverse developmental outcomes are influenced by the degree of visual impairment, neurological factors, and psychosocial environment.
Further research into the interplay of these factors is crucial for effective intervention.