Abstract:

Objective To measure the temperature of cornea (TOC) on ocular surface of healthy people with non-contact infrared thermometer, and determine the reference range. Methods Large sample single center random sampling was adopted to select healthy volunteers from medical examinees of Pudong New District of Shanghai. With environment temperature of (26±2) ℃ and relative humidity of (60±5)%, non-contact infrared thermometer was used to measure TOC on ocular surface of right eyes after blinking. Results A total of 3 288 subjects were enrolled after random sampling and screening, with 1 978 males and 1 310 females. Three hundred and ninety-six subjects aged no more than 15 years, 942 aged between 15 and 30 years, 1 482 aged between 30 and 50 years, and 468 aged more than 50 years. TOC on ocular surface of total sample was (32.06±1.24)℃. TOC on ocular surface exhibited an increased tendency with age stages. There were significant differences in TOC of ocular surface between males and females [(32.26±1.11)℃ vs (31.75±1.36)℃, P<0.01]. However, there was no significant difference in TOC of ocular surface between males and total sample and between females and total sample (P>0.05). Conclusion With environment temperature of (26±2)℃ and relative humidity of (60±5)%, (32.06±1.24) ℃ may serve as the normal range of TOC on ocular surface measured by non-contact infrared thermometer in clinics, and there may exist differences between males and females.

Key words: temperature of cornea, ocular surface, random sampling, normal range, gender