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- Title
Correlation between corneal and ambient temperature with particular focus on polar conditions.
- Authors
Slettedal, Jon Klokk; Ringvold, Amund
- Abstract
Purpose To examine the relationship between human corneal and environmental temperature. Methods An infrared camera was used to measure the corneal surface temperature in a group of healthy volunteers as well as in an experimental setting with donor corneas and an artificial anterior chamber, employing circulating saline at +37°C. Liquid nitrogen was used to obtain a very low temperature in the experimental setting. High ambient temperature measurements were performed in a sauna. Results In healthy volunteers, the cornea required at least 20-30 min to adapt to change in ambient temperature. The relationship between corneal and external temperature was relatively linear. At the two extremes, +83°C and −40°C, the corneal temperature was +42°C and +25.1°C, respectively. In the experimental setting, corneal temperature was +24.3°C at air temperature −40°C. Conclusion A rather stable aqueous humour temperature of +37°C and high thermal conductivity of the corneal tissue prevent corneal frostbite even at extremely low ambient temperatures.
- Subjects
CORNEA; ATMOSPHERIC temperature; THERMAL conductivity; OPHTHALMOLOGIC emergencies; EPITHELIUM; FLUORESCEIN; ANATOMY
- Publication
Acta Ophthalmologica (1755375X), 2015, Vol 93, Issue 5, p422
- ISSN
1755-375X
- Publication type
Article
- DOI
10.1111/aos.12657