Associations between ocular surface parameters, contrast sensitivity, and higher-order aberrations in computer vision...

Area of Science:

• Ophthalmology
• Optometry
• Vision Science

Background:

• Computer vision syndrome (CVS), also known as digital eye strain (DES), is a prevalent condition associated with prolonged digital screen use.
• Understanding its impact on visual function and ocular health is crucial for developing effective management strategies.

Purpose of the Study:

• To evaluate changes in ocular surface parameters, contrast sensitivity (CS), and higher-order aberrations (HOAs) in individuals with CVS/DES.
• To assess the associations between these visual and ocular parameters in CVS/DES patients.

Main Methods:

• A prospective observational case-control study involving 55 CVS cases and 55 age-matched controls.
• Assessment of central and peripheral contrast sensitivity using Pelli-Robson (PR) charts and Spaeth-Richman contrast sensitivity test (SPARCS).
• Evaluation of dry eye disease (DED) and measurement of higher-order aberrations (HOAs) using a wavefront aberrometer.

Main Results:

• While Pelli-Robson (PR) scores were similar, the Spaeth-Richman contrast sensitivity test (SPARCS) revealed significantly reduced central and peripheral CS in the CVS group.
• The CVS group exhibited significantly higher HOA values, including root mean square HOA error and spherical aberration.
• More severe dry eye disease (DED) findings were observed in individuals with CVS/DES.

Conclusions:

• CVS/DES significantly impairs visual function through reduced contrast sensitivity, increased higher-order aberrations, and dry eye.
• Assessing both central and peripheral CS offers a comprehensive understanding of visual quality impacts.
• Early ergonomic interventions and preventive measures are essential for maintaining ocular health in the digital age.