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[Risk factors for asthenopia among computer terminal operators]

F R Sánchez-Román1, C Pérez-Lucio, C Juárez-Ruíz

  • 1Servicios de Salud en el Trabajo, Centro Médico Nacional (CMN) Siglo XXI, Instituto Mexicano del Seguro Social (IMSS).

Salud Publica De Mexico
|May 1, 1996
PubMed
Summary

Computer terminal operators experience higher rates of asthenopia (visual fatigue). Working over four hours daily at video display terminals significantly increases this risk, necessitating work breaks to prevent eye strain.

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Area of Science:

  • Occupational Health
  • Ophthalmology
  • Ergonomics

Background:

  • Computer use is widespread in modern workplaces, leading to concerns about potential health effects on operators.
  • Asthenopia, or eye strain, is a common complaint among individuals who spend extended periods using visual display terminals.
  • Understanding the incidence and risk factors of asthenopia is crucial for developing effective workplace interventions.

Purpose of the Study:

  • To determine the prevalence of asthenopia in computer terminal operators compared to unexposed administrative workers.
  • To identify specific risk factors contributing to asthenopia among computer users.

Main Methods:

  • A comparative study was conducted with 35 computer terminal operators and 70 unexposed administrative workers.

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  • Data on potential risk factors including environmental conditions, work habits, and personal characteristics were collected.
  • Asthenopia was diagnosed based on the presence of at least one sign or symptom during a workday.

    • Main Results:

    • The incidence of asthenopia was significantly higher in the computer terminal operator group (68.5%) compared to the unexposed group (47.7%).
    • Working more than four hours daily at a video display terminal was identified as a significant risk factor for developing asthenopia.
    • Other studied factors like lighting, screen type, and eye-to-monitor distance did not show significant associations in this study.

    Conclusions:

    • Regular breaks during computer work are recommended to mitigate visual fatigue.
    • Further research is needed to establish safety criteria and standardize work practices for computer terminal use in the studied population.