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Related Experiment Videos

Visual field loss while wearing full-face respiratory protection

S D Zelnick1, R T McKay, J E Lockey

  • 1Department of Environmental Health, University of Cincinnati, Ohio 45267-0458.

American Industrial Hygiene Association Journal
|April 1, 1994
PubMed
Summary

Full-face respirators significantly impact wearer visual fields. Quantifying visual field loss helps design safer respirators and select appropriate protective equipment.

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Area of Science:

  • Occupational safety and health
  • Human factors engineering
  • Vision science

Background:

  • Full-face respirators are essential personal protective equipment in various industries.
  • Limited visual field can compromise worker safety and task performance.
  • Quantifying visual field reduction is crucial for respirator design and selection.

Purpose of the Study:

  • To quantify the visual field loss associated with different full-face respirator designs.
  • To analyze patterns of visual field impairment caused by respirator use.
  • To inform the development of respirators with enhanced visual capabilities.

Main Methods:

  • Utilized a modified Goldmann projection perimeter to measure visual fields.
  • Assessed 21 test subjects wearing three distinct types of full-face respirators.
  • Calculated visual field loss by comparing measurements with and without respirator use.

Main Results:

  • Significant and distinct patterns of visual field loss were observed for each respirator type.
  • The extent of visual field reduction varied depending on the respirator's design.
  • Quantitative data on visual field loss was successfully obtained.

Conclusions:

  • Respirator design critically influences visual field availability.
  • Findings can guide the engineering of full-face respirators with improved optical properties.
  • This methodology aids in selecting respiratory protection that maintains necessary visual fields for specific job tasks.

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