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Visual function and perinatal focal cerebral infarction

E Mercuri1, J Atkinson, O Braddick

  • 1Visual Development Unit, University College, London.

Archives of Disease in Childhood. Fetal and Neonatal Edition
|September 1, 1996
PubMed
Summary
This summary is machine-generated.

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Infants with perinatal cerebral infarction often show visual function abnormalities. Lesion location and size on MRI do not always predict the severity of visual impairment, highlighting the need for comprehensive vision testing.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Pediatrics

Background:

  • Perinatal cerebral infarction can impact infant neurodevelopment.
  • Visual pathway development is vulnerable to early brain injury.
  • Assessing visual function in infants with brain lesions is crucial for early intervention.

Purpose of the Study:

  • To evaluate visual function in infants diagnosed with perinatal cerebral infarction.
  • To correlate lesion characteristics from magnetic resonance imaging (MRI) with visual function deficits.
  • To determine the necessity of detailed visual assessments in affected infants.

Main Methods:

  • A cohort of twelve infants with cerebral infarction (confirmed by MRI) underwent a comprehensive visual function assessment battery.
  • Tests included visual attention (fixation shifts), cerebral asymmetry evaluation (optokinetic nystagmus, visual fields), acuity assessment (forced choice preferential looking), and visual evoked potential (VEP) measures.

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  • Neurophysiological measures included phase reversal and orientation reversal VEPs.

    • Main Results:

    • A significant incidence of visual function abnormalities was detected across multiple tests.
    • The extent and location of cerebral lesions on MRI did not consistently predict the presence or severity of visual impairments.
    • Some infants exhibited visual abnormalities not fully explained by imaging findings.

    Conclusions:

    • The developing brain may exhibit some compensatory mechanisms for early focal visual pathway lesions.
    • Despite potential compensation, all infants with focal brain lesions require thorough visual function evaluation.
    • Early and comprehensive vision assessment is recommended for infants with perinatal cerebral infarction to identify and manage visual deficits.