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Is exposure to cocaine or cigarette smoke during pregnancy associated with infant visual abnormalities?

Beatrice Latal Hajnal1, Donna M Ferriero, J Colin Partridge

  • 1Growth and Development Centre, University Children's Hospital Zurich, Switzerland.

Developmental Medicine and Child Neurology
|August 4, 2004
PubMed

Insights

In utero exposure to cocaine or cigarette smoke did not affect infant visual acuity or visual system abnormalities. However, visual system abnormalities were linked to abnormal neurological exams, suggesting a potential clinical marker for neurological risk.

Area of Science:

  • Neonatal health
  • Ophthalmology
  • Neurodevelopmental disorders

Background:

  • Prenatal exposure to substances like cocaine and cigarette smoke is a concern for infant development.
  • Understanding the impact on visual outcomes is crucial for early detection and intervention.

Purpose of the Study:

  • To investigate the association between in utero cocaine or cigarette smoke exposure and visual outcomes in healthy infants.
  • To explore the relationship between visual system abnormalities and neurological examination findings.

Main Methods:

  • Prospective, masked, race-matched study of 153 healthy infants (gestational age 34-42 weeks).
  • Quantitative urine and meconium analyses to confirm exposure to cocaine and cigarette smoke.
  • Assessment of grating acuity and visual system abnormalities (VSA) at 6 weeks using Teller acuity cards and neurological examination in 96 infants.

Main Results:

  • No significant association was found between prenatal cocaine or cigarette smoke exposure and infant visual acuity or VSA.
  • Visual system abnormalities (VSA) were significantly associated with abnormal neurological examination findings (OR 7.9, 95% CI 2.0-31.5, p=0.004).
  • This association was independent of drug exposure and other risk factors.

Conclusions:

  • Prenatal exposure to cocaine or cigarette smoke does not appear to directly impact visual outcomes in this cohort.
  • Abnormal neurological examination findings are a strong indicator of potential neurological abnormalities in infants.
  • Visual system abnormalities may serve as a clinical marker for identifying infants at risk for neurological issues.

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