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Visual dysfunction among former microelectronics assembly workers.

D Mergler1, G Huel, R Bowler

  • 1Centre pour l'étude des interactions biologiques entre la santé et l'environnement (CINBIOSE), Université du Québec à Montréal.

Archives of Environmental Health
|November 1, 1991
PubMed
Summary
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Former microelectronics workers show significantly reduced contrast sensitivity and increased acquired dyschromatopsia. These visual impairments suggest potential neuro-optic pathway damage from occupational chemical exposures in the electronics industry.

Area of Science:

  • Occupational Health
  • Ophthalmology
  • Neuroscience

Background:

  • Microelectronics assembly utilizes known neurotoxins with potential ophthalmotoxic effects.
  • No prior systematic studies investigated visual disturbances in microelectronics workers.

Purpose of the Study:

  • To compare visual functions between former microelectronics workers and a matched reference population.
  • To identify potential occupational risks for visual impairment in this industry.

Main Methods:

  • A matched-pair study design was employed, matching 54 former workers with 54 controls.
  • Visual functions assessed included near/far visual acuity, chromatic discrimination, and near contrast sensitivity.
  • Statistical analysis used Signed-rank Wilcoxon test and chi-square for matched pairs.

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Main Results:

  • Former workers exhibited significantly lower contrast sensitivity, especially at intermediate frequencies.
  • Acquired dyschromatopsia prevalence was significantly higher in former workers (p < .001).
  • No significant differences were found in far visual acuity between groups.

Conclusions:

  • Findings suggest contrast sensitivity deficits and visual pathway impairment in former microelectronics workers.
  • Ophthalmotoxic chemical exposure is the probable risk factor for observed visual disturbances.
  • This study highlights the need for further investigation into visual health in the microelectronics industry.