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Published on: October 24, 2019
Chromatic visual evoked potential responses in preschool children
Manca Tekavčič Pompe1, Branka Stirn Kranjc, Jelka Brecelj
1Eye Clinic, University Medical Centre, Grablovičeva 46, Ljubljana 1000, Slovenia. manca.tekavcic‐pompe@guest.arnes.si
Summary
Chromatic visual evoked potential (VEP) testing is reliable in preschool children. Red-green stimuli yield higher amplitude and shorter latency P waves compared to blue-yellow stimuli.
Area of Science:
- Ophthalmology
- Neuroscience
- Developmental Pediatrics
Background:
- Chromatic visual evoked potential (VEP) assesses visual pathway function.
- Understanding VEP development in preschool children is crucial for early visual assessment.
Purpose of the Study:
- To analyze chromatic VEP responses to red-green (R-G) and blue-yellow (B-Y) stimuli in preschool children.
- To investigate age-related changes in VEP latency and amplitude.
Main Methods:
- Evaluated 30 preschool children aged 1.5-6 years.
- Recorded chromatic VEPs using isoluminant R-G and B-Y stimuli at 7° and 21°.
- Analyzed positive (P) wave latency and amplitude in relation to age and stimulus parameters.
Main Results:
- A predominant positive (P) wave was observed.
- P wave latency showed a linear decrease with age.
- Shorter P wave latency was noted with larger (21°) vs. smaller (7°) stimuli for both R-G and B-Y.
- P wave latency was shorter for R-G vs. B-Y stimuli at 21°.
- P wave amplitude was lower for 7° R-G vs. 21° R-G stimuli.
- P wave amplitude was lower for B-Y vs. R-G stimuli.
Conclusions:
- Chromatic VEPs to R-G and B-Y stimuli are reliably measurable in preschool children.
- R-G stimulation elicits a higher amplitude and shorter latency P wave compared to B-Y stimulation.
- VEP latency demonstrates age-related maturation in early childhood.
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