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Relationship between ocular surface temperature and peripheral vasoconstriction in healthy subjects: a thermographic
Federica Vannetti1, Sara Matteoli, Lucia Finocchio
1Rehabilitation Center, IRCCS, Don Carlo Gnocchi Foundation, Florence, Italy.
Summary
Peripheral vasoconstriction, induced by cold water immersion, significantly increased ocular surface temperature in healthy subjects, suggesting a link between ocular blood flow and temperature regulation. This finding supports ocular surface temperature as a non-invasive measure for assessing ocular hemodynamics.
Area of Science:
- Ophthalmology
- Physiology
- Medical Imaging
Background:
- Impaired ocular blood flow regulation is a key factor in eye diseases like glaucoma.
- Understanding ocular hemodynamics is crucial for diagnosing and managing various ocular conditions.
Purpose of the Study:
- To investigate if peripheral vasoconstriction affects ocular blood supply.
- To determine if ocular surface temperature changes can detect alterations in ocular blood flow.
Main Methods:
- Infrared thermography was used to measure ocular surface temperature in 38 healthy subjects.
- Subjects immersed their hands in ice water to induce peripheral vasoconstriction.
- Ocular surface temperature was recorded before and during cold exposure.
Main Results:
- Ocular surface temperature significantly increased (p < 0.05) after peripheral vasoconstriction.
- The temperature rise was most notable in the temporal and nasal areas, near ocular blood supply sources.
- A mean temperature increase of 0.12°C ± 0.13°C was observed at t(0) in the nasal and temporal areas.
Conclusions:
- Peripheral vasoconstriction induces a measurable response in ocular hemodynamics.
- Ocular surface temperature is a promising, non-invasive method for evaluating ocular vaso-regulation.
- This technique offers a cost-effective and time-efficient approach to assessing ocular blood flow dynamics.
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