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Related Experiment Video

Updated: Jul 6, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

[Asthenopia in VDT users: our experience].

C Fenga¹, R Di Pietro, P Fenga

¹Dipartimento di Medicina Sociale del territorio, Sezione di Medicina del Lavoro.

Giornale Italiano Di Medicina Del Lavoro Ed Ergonomia

|April 16, 2008

Summary

This study found that over half of office workers using video display terminals (VDTs) experience asthenopia, or eye strain. Prolonged VDT use and presbyopia significantly worsen these symptoms.

Related Experiment Videos

Last Updated: Jul 6, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

Area of Science:

Occupational Health
Ophthalmology
Ergonomics

Context:

Video Display Terminal (VDT) use is prevalent in modern offices.
Asthenopia, or eye strain, is a common complaint among VDT users.
Understanding the risk factors for VDT-related asthenopia is crucial for workplace health.

Purpose:

To investigate the relationship between asthenopia and work involving Video Display Terminals (VDTs).
To analyze the prevalence of occupational asthenopia in office workers.
To determine the correlation between asthenopic symptoms and VDT usage duration and refractive errors.

Summary:

A study of 62 office workers using VDTs for over 20 hours weekly revealed a 51% prevalence of asthenopia.
A statistically significant correlation was found between the severity of asthenopic symptoms and the number of weekly hours and years of VDT work.
Subjects with presbyopia showed a particular susceptibility to VDT-related asthenopic symptoms.

Impact:

Highlights the significant prevalence of asthenopia in VDT workers.
Provides evidence for the dose-response relationship between VDT use and eye strain.
Identifies presbyopia as a key risk factor, informing targeted interventions and preventative strategies for occupational eye health.