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The relationship between body and ambient temperature and corneal temperature
Line Kessel1, Leif Johnson, Henrik Arvidsson
1Department of Ophthalmology, Glostrup Hospital, University of Copenhagen, Glostrup, Denmark. line.kessel@dadlnet.dk
Investigative Ophthalmology & Visual Science
|July 31, 2010
Summary
Corneal temperature rises with ambient and body temperature, potentially increasing eye disease risk with global warming. Frequent infections may also contribute to age-related lens disorders.
Area of Science:
- Ophthalmology
- Environmental Health
- Physiology
Background:
- Elevated ambient temperatures are suspected risk factors for eye conditions like presbyopia and cataract.
- Understanding temperature regulation in the eye is crucial for assessing environmental health risks.
Purpose of the Study:
- To investigate the relationship between ambient, corneal, and body core temperatures.
- To assess how environmental heat impacts ocular temperature.
Main Methods:
- Corneal temperature and ambient temperature were measured in 11 human volunteers.
- Corneal temperature was monitored using thermal imaging during induced body core temperature increases in humans and rats.
Main Results:
- A linear correlation was observed between corneal and body temperature in rats.
- In humans, corneal temperature initially increased with body temperature but plateaued between 36.5°C and 37.0°C.
- A linear relationship was found between ambient and corneal temperature in humans.
Conclusions:
- Human corneal temperature is predicted to peak at 36.5°C–37.0°C with ambient temperatures of 32.0°C–34.5°C.
- Increased incidence of presbyopia and cataract may occur with global warming due to rising eye temperatures.
- Elevated body core temperature and frequent infections are linked to age-related lens disorders.
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