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Static and Dynamic Measurement of Ocular Surface Temperature in Dry Eyes.

Tan LL, Sanjay S, Morgan PB - J Ophthalmol (2016)

Bottom Line: Dynamic measures were study of mean change and net change in OST over 10 s of sustained eye opening.Results.Conclusions.

View Article: PubMed Central - PubMed

Affiliation: School of Chemical and Life Sciences, Singapore Polytechnic, Singapore 139651.

ABSTRACT
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 t = 0, 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 (Max T), and minimum (Min T) temperatures of the region of interest. Results. For static measures, dry eyes recorded significantly lower GCC, MOST, Min T, Max T, 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 Max T 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.

No MeSH data available.


Related in: MedlinePlus

(Static measures) box plots showing comparison of absolute OST at 0 s, 5 s, and 10 s: (a) GCC; (b) MOST; (c) Min T; (d) Max T; (e) T1; (f) T4; (g) CT; (h) LT; (i) LN; and (j) CN in (grey box) dry eye subjects and (white box) controls. The results were expressed as median and mean ± SD. Mean-connecting-lines are represented by dotted lines to show the change in mean over 0 s, 5 s, and 10 s. p values are shown using one-way ANOVA at 95% CI.
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fig2: (Static measures) box plots showing comparison of absolute OST at 0 s, 5 s, and 10 s: (a) GCC; (b) MOST; (c) Min T; (d) Max T; (e) T1; (f) T4; (g) CT; (h) LT; (i) LN; and (j) CN in (grey box) dry eye subjects and (white box) controls. The results were expressed as median and mean ± SD. Mean-connecting-lines are represented by dotted lines to show the change in mean over 0 s, 5 s, and 10 s. p values are shown using one-way ANOVA at 95% CI.

Mentions: For static measures, dry eye recorded a significantly lower temperature (for GCC, MOST, Min T, Max T, T4, CT, LT, and LN) as compared to controls at 0 s, 5 s, and 10 s (one-way ANOVA, p < 0.05). The differences were highly significant (p < 0.01) for GCC, MOST, Max T, T4, CT, and LT and were significant (p < 0.05) for Min T and LN. There were marginal significant differences found for CN at 5 s and 10 s and no significant differences were found between the two groups for T1 (Figure 2).


Static and Dynamic Measurement of Ocular Surface Temperature in Dry Eyes.

Tan LL, Sanjay S, Morgan PB - J Ophthalmol (2016)

(Static measures) box plots showing comparison of absolute OST at 0 s, 5 s, and 10 s: (a) GCC; (b) MOST; (c) Min T; (d) Max T; (e) T1; (f) T4; (g) CT; (h) LT; (i) LN; and (j) CN in (grey box) dry eye subjects and (white box) controls. The results were expressed as median and mean ± SD. Mean-connecting-lines are represented by dotted lines to show the change in mean over 0 s, 5 s, and 10 s. p values are shown using one-way ANOVA at 95% CI.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4940548&req=5

fig2: (Static measures) box plots showing comparison of absolute OST at 0 s, 5 s, and 10 s: (a) GCC; (b) MOST; (c) Min T; (d) Max T; (e) T1; (f) T4; (g) CT; (h) LT; (i) LN; and (j) CN in (grey box) dry eye subjects and (white box) controls. The results were expressed as median and mean ± SD. Mean-connecting-lines are represented by dotted lines to show the change in mean over 0 s, 5 s, and 10 s. p values are shown using one-way ANOVA at 95% CI.
Mentions: For static measures, dry eye recorded a significantly lower temperature (for GCC, MOST, Min T, Max T, T4, CT, LT, and LN) as compared to controls at 0 s, 5 s, and 10 s (one-way ANOVA, p < 0.05). The differences were highly significant (p < 0.01) for GCC, MOST, Max T, T4, CT, and LT and were significant (p < 0.05) for Min T and LN. There were marginal significant differences found for CN at 5 s and 10 s and no significant differences were found between the two groups for T1 (Figure 2).

Bottom Line: Dynamic measures were study of mean change and net change in OST over 10 s of sustained eye opening.Results.Conclusions.

View Article: PubMed Central - PubMed

Affiliation: School of Chemical and Life Sciences, Singapore Polytechnic, Singapore 139651.

ABSTRACT
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 t = 0, 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 (Max T), and minimum (Min T) temperatures of the region of interest. Results. For static measures, dry eyes recorded significantly lower GCC, MOST, Min T, Max T, 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 Max T 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.

No MeSH data available.


Related in: MedlinePlus