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Colour Vision Deficits in Children with Amblyopia: Impact of Angular Size of Stimuli on Detection

Kristine Kalnica-Dorosenko1,2, Anzelika Litavnieka2, Renars Truksa2

  • 1Eye Diseases Clinic, Children's Clinical University Hospital, Vienibas Gatve 45, LV-1004 Riga, Latvia.

Vision (Basel, Switzerland)
|January 23, 2025
PubMed

Insights

Children with amblyopia show impaired color vision, especially with small (1°) red-green and blue-yellow stimuli during binocular viewing. Larger stimuli (2°, 3°) did not reveal these deficits, indicating size-dependent visual impairments.

Area of Science:

  • Ophthalmology
  • Pediatric Vision Science
  • Visual Neuroscience

Background:

  • Amblyopia, or 'lazy eye,' is a common cause of reduced vision in children.
  • Color vision deficits can impact daily life and visual development.
  • Understanding these deficits in amblyopia is crucial for early intervention.

Purpose of the Study:

  • To investigate color vision deficits in children with amblyopia.
  • To assess the impact of stimulus size on color discrimination in pediatric amblyopia.
  • To evaluate a computerized color vision test for detecting these deficits.

Main Methods:

  • A computerized color vision test was used with 40 children (20 with amblyopia, 20 controls).
  • Stimulus sizes of 1°, 2°, and 3° were employed.
  • Color discrimination was assessed along red-green and blue-yellow axes during binocular viewing.

Main Results:

  • Children with amblyopia demonstrated significant color vision impairments.
  • These deficits were most pronounced for small (1°) chromatic stimuli.
  • No significant color vision differences were observed for larger (2° and 3°) stimuli between groups.

Conclusions:

  • Pediatric amblyopia is associated with specific color vision deficits, particularly for small stimuli.
  • Computerized color vision testing is effective in detecting these size-dependent impairments.
  • Findings can inform targeted clinical assessments and interventions for visual function in amblyopia.

Keywords:
amblyopiachildrencolour visioncomputerized colour vision teststimulus sizevisual deficits

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