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Updated: Jun 12, 2026

How to Obtain Reliable Visual Event-related Potentials in Newborns
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Flash visual evoked potentials at 2-year-old infants with different birth weights.

Jing-Jing Feng1, Ting-Xue Wang, Chen-Hao Yang

  • 1Department of Child Health Care, Children's Hospital of Fudan University, Shanghai, 201102, China.

World Journal of Pediatrics : WJP
|May 22, 2010
PubMed
Summary

Visual electrophysiological outcomes in premature infants show delayed P2 wave latency, particularly in very low birth weight (VLBW) infants, correlating with cognitive function. Flash visual evoked potentials (FVEPs) are valuable for assessing infant visual development.

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Area of Science:

  • Neuroscience
  • Developmental Pediatrics
  • Ophthalmology

Background:

  • Preterm infants exhibit a higher incidence of visual impairments.
  • Long-term visual electrophysiological outcomes and their link to cognitive functions in premature infants require further investigation.
  • This study examines visual electrophysiological outcomes in 2-year-old infants based on birth weight.

Purpose of the Study:

  • To investigate the visual electrophysiological outcomes using flash visual evoked potentials (FVEPs) in 2-year-old infants of varying birth weights.
  • To explore the correlation between visual cognitive functions and FVEPs.
  • To assess the utility of FVEPs in evaluating infant visual capabilities.

Main Methods:

  • FVEPs were recorded in 77 infants: 25 very low birth weight (VLBW), 16 low birth weight (LBW), and 36 full-term infants.

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Last Updated: Jun 12, 2026

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  • Neuromotor development was assessed using the Bayley Scales of Infant Development, Second Edition (BSID-II).
  • Visual cognitive functions were evaluated by scoring performance on 12 BSID-II items for infants aged 23-25 months.

    • Main Results:

    • The P2 wave was the primary component in all groups. Mean P2 latency was significantly delayed in VLBW infants (149.65 ms) compared to LBW (129.39 ms) and full-term infants (126.14 ms).
    • No significant difference in P2 latency was found between LBW and full-term infants.
    • P2 wave latency showed a negative correlation with mental developmental index (MDI) and visual cognitive capability.

    Conclusions:

    • Premature infants, especially VLBW infants, exhibit delayed visual functional development at 2 years corrected age, evidenced by prolonged P2 wave latency on FVEPs.
    • FVEPs demonstrate a statistically significant correlation between visual cognition measures and P2 peak latency.
    • FVEPs serve as a noninvasive and convenient tool for assessing infant visual development and function.