Does air gas aesthesiometry generate a true mechanical stimulus for corneal sensitivity measurement?
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Authors
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Publication date
01.03.2018
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01A - Journal article
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Clinical and Experimental Optometry
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Volume
101
Issue / Number
2
Pages / Duration
193-199
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Publisher / Publishing institution
Wiley
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Abstract
Aim of this study - to determine: (A) the stimulus temperature inducing no or least change in ocular surface temperature (OST), using the Belmonte Ocular Pain Meter (OPM); and (B) to evaluate if OST remains unchanged with different stimulus durations and airflow rates.
A total of 14 subjects (mean age 25.14 ± 2.18 years) participated: (A) OST was recorded using an infrared camera (FLIR A310) during the presentation of airflow stimuli, at five temperatures, ambient temperature (AT) +5°C, +10°C, +15°C, +20°C and +30°C, using the OPM; and (B) OST measurements were repeated with two stimulus temperatures (AT +10°C and +15°C) while varying stimulus durations and airflow rates.
Results: (A) Stimulus temperatures of AT +10°C and +15°C induced the least changes in OST (-0.20 ± 0.13°C and 0.08 ± 0.05°C). (B) OST changes were statistically significant with both stimulus temperatures and increased with increasing airflow rates (p < 0.001).
Keywords
air gas aesthesiometry, cornea, corneal sensitivity, mechanical stimulus
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ISBN
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0816-4622
1444-0938
1444-0938
Language
English
Created during FHNW affiliation
Yes
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Publication status
Published
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Peer review of the complete publication
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Citation
Nosch, D., Pult, H., Albon, J., Purslow, C., & Murphy, P. J. (2018). Does air gas aesthesiometry generate a true mechanical stimulus for corneal sensitivity measurement? Clinical and Experimental Optometry, 101(2), 193–199. https://doi.org/10.1111/cxo.12603