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Corneal hypersensitivity to cold stimuli in symptomatic computer users.

Cristian Talens-Estarelles1, Blanka Golebiowski2, Klaus Ehrmann2

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Frequent computer use may alter ocular surface sensitivity. This study found that digital eye strain symptoms, especially dry eye, correlate with increased corneal cold sensitivity in users.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Human Computer Interaction

Background:

  • Prolonged computer use can lead to ocular dryness and discomfort.
  • Repeated ocular surface stimulation may alter corneal sensitivity.

Purpose of the Study:

  • To investigate the link between ocular symptoms and corneal sensitivity to cold and mechanical stimuli in computer users.
  • To assess how digital eye strain and dry eye symptoms relate to corneal sensory perception.

Main Methods:

  • Fifty-two young, frequent computer users underwent testing for corneal sensitivity to cold and mechanical stimuli.
  • Ocular surface symptoms and digital eye strain were evaluated using validated questionnaires.
  • Statistical analyses, including correlation and regression, examined associations between sensory thresholds and symptom scores.

Main Results:

  • Cold sensation threshold was significantly associated with age, Computer Vision Syndrome Questionnaire (CVS-Q) score, CVS-Q dry eye score, and mechanical sensation threshold.
  • Age and mechanical sensation threshold were significant predictors of cold sensitivity.
  • No significant correlations were found between mechanical sensitivity and symptom scores.

Conclusions:

  • Digital eye strain symptoms, particularly dry eye, are linked to heightened corneal cold sensitivity.
  • Corneal hypersensitivity to cold may serve as an indicator of ocular discomfort during computer use.
  • Further research is needed to explore corneal cold hypersensitivity as a marker of computer vision discomfort.