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Related Experiment Videos

Relationship between corneal temperature and finger temperature.

F Girardin1, S Orgül, C Erb

  • 1University Eye Clinic Basel, Switzerland.

Archives of Ophthalmology (Chicago, Ill. : 1960)
|February 26, 1999
PubMed
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Corneal temperature correlates with finger temperature, suggesting parallel blood flow regulation in the eye and finger. This finding may offer new insights into non-invasive thermoregulation monitoring.

Area of Science:

  • Ophthalmology
  • Physiology
  • Medical Thermography

Background:

  • Body surface temperature is influenced by local blood flow.
  • Temperature measurements can potentially reflect local blood flow dynamics.

Purpose of the Study:

  • To investigate the correlation between corneal temperature and finger temperature.
  • To explore potential links in thermoregulation between the eye and extremities.

Main Methods:

  • Corneal, finger, and tympanic temperatures were measured in 266 individuals using noncontact infrared thermometers.
  • Exclusion criteria included topical eye medication use or corneal inflammation.
  • Regression analysis was employed to assess the relationship between variables.

Main Results:

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  • A highly significant correlation (R=0.67, P<.001) was found between corneal and finger temperatures.
  • Environmental, tympanic, finger temperatures, age, and sex all significantly predicted corneal temperature.
  • Mean corneal temperature was 0.16°C higher in males after adjustments.

Conclusions:

  • Corneal temperature shows a significant correlation with finger temperature, independent of environmental and tympanic temperatures, age, and sex.
  • This suggests potential similarities in blood flow regulation mechanisms between the finger and the eye.
  • Findings may support the use of corneal temperature as an indicator of peripheral blood flow.