Journal
APPLIED SCIENCES-BASEL
Volume 12, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/app12094596
Keywords
dry eye disease; thermography; ocular surface temperature; tear evaporation rate; natural blinking
Categories
Funding
- European Union's Horizon 2020 Research and Innovation Programme, under the Marie Sklodowska-Curie Actions Research Fellowship Programme (European Dry Eye Network (EDEN)) [642760]
- Universidad Complutense de Madrid
- Banco Santander, Spain [CT63/19-CT64/19]
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This study analyzed the variations in ocular surface temperature (OST) using infrared thermography in dry eye disease (DED) and control eyes. The results showed that there were no significant differences between DED and control eyes under natural non-controlled blinking conditions. However, the presence of clinical signs in the control group may affect the results, highlighting the importance of DED diagnosis criteria.
Infrared (IR) thermography is a tool to non-invasively assess the tear film temperature. The aim was to analyze ocular surface temperature (OST) variations in dry eye disease (DED) and control eyes under natural non-controlled blinking conditions. Imaging was performed with a thermal camera (FLIR Systems Inc.) at 30 Hz framerate in 79 participants (39 DED (62.5% women, average age 48 +/- 20 years) and 40 control (46.2 % women, average age 38 +/- 13 years)) using non-contact IR thermography camera. Data acquisitions were performed in natural blinking conditions for 40 s. IR images were analyzed using a custom algorithm that calculates the OST indexes: mean OST, OST at the start and at the end, minimum and maximum OST, and tear evaporation rate (TER). No significant differences were found between groups in any thermal parameter analyzed (paired comparisons t-test, p > 0.05). In conclusion, the findings of this study did not reveal significant differences between DED and control eyes under natural non-controlled blinking conditions. However, the presence of clinical signs in the control group may affect the results, highlighting the role of DED diagnosis criteria.
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