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Related Experiment Videos

Tactile corneal reflex development in full-term babies.

Moshe Snir1, Ruth Axer-Siegel, Dan Bourla

  • 1Department of Ophthalmology, Rabin Medical Center, Beilinson Campus, Petah Tiqva, Israel.

Ophthalmology
|March 5, 2002
PubMed
Summary

The tactile corneal reflex is underdeveloped in newborns, with only 10% showing it at 2 days old. This reflex develops over the first three months, indicating normal neurologic maturation in infants.

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Area of Science:

  • Neonatal neurology
  • Ophthalmology
  • Developmental pediatrics

Background:

  • The tactile corneal reflex is a crucial indicator of neurological function.
  • Its developmental trajectory in healthy newborns requires further elucidation.

Purpose of the Study:

  • To assess the development of the tactile corneal reflex in healthy, full-term infants.
  • To correlate reflex presence with gestational age, postpartum age, and birth weight.

Main Methods:

  • Prospective longitudinal study involving 191 neonates (1-3 days) and 200 infants (1-12 weeks).
  • Tactile corneal reflex assessed using the Cochet-Bonnet esthesiometer by three ophthalmologists.
  • Logistic regression analysis to determine factors influencing reflex development.

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Main Results:

  • Only 10% of neonates exhibited the reflex at 2 days, increasing to 50% by 3.5 weeks and 100% by 12 weeks.
  • Postpartum age significantly influenced reflex development more than gestational age.
  • Birth weight also showed a statistically significant impact on reflex presence (P=0.005).

Conclusions:

  • The tactile corneal reflex is largely absent in newborns and matures progressively over the first three months.
  • This development signifies a longitudinal neurologic maturation process in infants.
  • Findings support the tactile corneal reflex as a marker for normal neurologic development.