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Related Experiment Videos

Temperature--a factor in ocular development?

A R Fielder, M I Levene, I M Russell-Eggitt

    Developmental Medicine and Child Neurology
    |June 1, 1986
    PubMed
    Summary
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    Premature infants experience a significant ocular thermal deficit compared to fetal temperatures. This eye temperature reduction may contribute to the higher incidence of myopia in premature babies.

    Area of Science:

    • Ophthalmology
    • Neonatology
    • Physiology

    Background:

    • Premature infants often exhibit altered physiological parameters compared to full-term infants.
    • Fetal ocular temperature is approximately 38.0°C, higher than maternal core temperature.
    • Postnatal thermal regulation in premature infants may not fully compensate for prenatal thermal conditions.

    Purpose of the Study:

    • To investigate ocular temperature differences between premature infants and full-term controls.
    • To explore the potential impact of postnatal ocular thermal deficit on ocular growth.
    • To examine the relationship between thermal deficit and the development of myopia in premature infants.

    Main Methods:

    • Ocular temperature was measured using a hand-held infrared thermometer.

    Related Experiment Videos

  • Measurements were taken on the right and left eyes of premature infants and full-term controls.
  • Statistical comparison of mean ocular temperatures between the two groups was performed.

    • Main Results:

    • Mean ocular temperatures for premature infants were 36.54°C (right) and 36.38°C (left).
    • Mean ocular temperatures for full-term controls were 36.40°C (right) and 36.25°C (left).
    • Premature infants exhibited a postnatal ocular thermal deficit of 1.0–2.0°C compared to estimated fetal temperatures.

    Conclusions:

    • Premature infants experience a persistent ocular thermal deficit postnatally.
    • This thermal deficit is a potential contributing factor to abnormal ocular growth.
    • The findings suggest a possible link between thermal deficit and myopia development in premature infants.