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Journal of Ophthalmology
Volume 2016, Article ID 7285132, 11 pages
Research Article

Static and Dynamic Measurement of Ocular Surface Temperature in Dry Eyes

1School of Chemical and Life Sciences, Singapore Polytechnic, Singapore 139651
2Ophthalmology and Visual Sciences, Khoo Teck Puat Hospital, Singapore 768828
3Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228
4Eurolens Research, The University of Manchester, Manchester M13 9PL, UK

Received 11 March 2016; Revised 7 June 2016; Accepted 8 June 2016

Academic Editor: Edward Manche

Copyright © 2016 Li Li Tan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. To study ocular surface temperature (OST) in dry eyes by static and dynamic measures. Methods. OST was recorded on 62 dry eyes and 63 age- and sex-matched controls. Static measures were study of absolute OST at , 5, and 10 s after eye opening. Dynamic measures were study of mean change and net change in OST over 10 s of sustained eye opening. Ten OST indices studied were temperatures of the geometric center of the cornea (GCC), extreme temporal (T1) and nasal conjunctiva (T4), midtemporal (CT) and nasal conjunctiva (CN), temporal (LT) and nasal (LN) limbus, and mean (MOST), maximum (), and minimum () temperatures of the region of interest. Results. For static measures, dry eyes recorded significantly lower GCC, MOST, , , T4, CT, LT, LN, and CN. For dynamic measures, dry eyes had significantly steeper regression line of mean change (corresponding to greater net change) for 5 s onward and T4 at 3 s onward. Conclusions. Both static and dynamic measures of the OST were valuable and can be used as clinical tool to assess dry eye.