Corneal hypersensitivity to cold stimuli in symptomatic computer users.

Autor:	Talens-Estarelles C; Department of Optics and Optometry and Vision Sciences, University of Valencia, Valencia, Spain., Golebiowski B; School of Optometry and Vision Science, University of New South Wales, Sydney, New South Wales, Australia., Ehrmann K; School of Optometry and Vision Science, University of New South Wales, Sydney, New South Wales, Australia., García-Lázaro S; Department of Optics and Optometry and Vision Sciences, University of Valencia, Valencia, Spain., Cerviño A; Department of Optics and Optometry and Vision Sciences, University of Valencia, Valencia, Spain., Stapleton F
Jazyk:	angličtina
Zdroj:	Optometry and vision science : official publication of the American Academy of Optometry [Optom Vis Sci] 2024 Sep 01; Vol. 101 (9), pp. 571-578.
DOI:	10.1097/OPX.0000000000002183
Abstrakt:	Significance: Prolonged computer use may result in repeated stimulation of the ocular surface due to ocular dryness, potentially leading to alterations in its sensitivity. Purpose: This study aimed to evaluate the relationship between ocular symptoms and corneal sensitivity to cold and mechanical stimuli in computer users. Methods: Fifty-two young (31 ± 6 years), frequent computer users, including symptomatic and asymptomatic users, participated in this study. Mechanical and cold sensation thresholds were determined at the central cornea of one randomly selected eye of each participant using the UNSW Liquid Jet Aesthesiometer. Ocular surface symptoms and digital eye strain were assessed using the Ocular Surface Disease Index, Ocular Comfort Index, Instant Ocular Symptom Survey, and Computer Vision Syndrome Questionnaire (CVS-Q). Associations between central corneal sensation thresholds and demographic variables, patterns of digital device use, and symptom scores were analyzed using Pearson (r) or Spearman (ρ) correlations and linear regression models. Results: Age (ρ = 0.24), CVS-Q score (ρ = -0.33), CVS-Q dry eye score (ρ = -0.28), and mechanical sensation threshold (ρ = 0.63) were significantly associated with cold sensation threshold (p≤0.04). Conversely, there were no significant relationships with Ocular Surface Disease Index, Ocular Comfort Index, or Instant Ocular Symptom Survey or with other demographic variables (p≥0.34). In multiple linear regression models, age and mechanical sensation threshold were significant predictors of cold sensitivity (p=0.04 and p<0.001, respectively) (adjusted R2 = 0.459). There were no significant correlations between mechanical sensitivity and symptom scores (p≥0.09). Conclusions: Symptoms of digital eye strain, particularly those related to dry eye, were associated with higher corneal cold sensitivity. Corneal hypersensitivity to cold stimuli as a marker of ocular discomfort during computer use requires further investigation. Competing Interests: Conflict of Interest Disclosure: None of the authors have reported a financial conflict of interest. (Copyright © 2024 American Academy of Optometry.)
Databáze:	MEDLINE
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