SUNGLASSES - PERFORMANCE AND COMFORT

A SMALL, INCIDENTAL SAMPLE OF COLLEGE STUDEWNTS INDICATED THAT OVER 90% WORE SUNGLASSES AT LEAST OCCASIONALLY, OVER 40% FREQUENTLY. OVER 90% OF USERS WORE SUNGLASSES TO REDUCE GLARE, WHILE ALMOST 80% SAID THAT SUNGLASSES ENABLED THEM TO SEE DETAIL BETTER. TWO EXPERIMENTS WERE CONDUCTED ON SIX SUBJECTS. IN ONE EXPERIMENT UNDER INTERIOR LIGHTING CONDITIONSS(BACKGROUND LUMINANCE, 100 FL), SUBJECTS VISUAL ACUITY WAS DETERMINED WITHOUT GLARE AND WITH 1000 FL OF REFLECTED GLARE, WITH DIRECT VISION, PLAIN SUNGLASSES OR POLAROID SUNGLASSES. ACUITY WAS REDUCED BY PRESENCE OF EITHEE GLARE OR SUNGLASSES. POLAROID SUNGLASSES IMPROVED ACUITY UNDER CONDITIONS OF REFLECTED GLARE. IN THE SECOND EXPERIMENT, SUBJECTS JUDGED THE MAGNITUDE OF DISCOMFORT GLARE WITHOUT SUNGLASSES AND WITH PLAIN OR POLAROID SUNGLASSES. WHILE BOTH TYPES OF SUNGLASSES REDUCED DISCOMFORT GLARE, THIS WAS NOT IN PROPORTION TO THEIR DEGREE OF LUMINANCE REDUCTION.

• Corporate Authors:

  Proc 17th Ann Meet Hum Factor Soc

  ,    

  Kansas State University, Manhattan

  Manhattan, KS  United States  66506
• Authors:
  • Mehan, R K
  • Bennett, C A
• Publication Date: 1973-10

Media Info

• Features: Figures; References;
• Pagination: 4 p.

Subject/Index Terms

• TRT Terms: Brightness; Consumers; Glare; Human factors; Reflectivity; Sunglasses; Sunlight; Vision; Visual perception
• Old TRIS Terms: Sun glare
• Subject Areas: Safety and Human Factors; Society;

Filing Info

• Accession Number: 00222371
• Record Type: Publication
• Source Agency: Highway Safety Research Institute
• Files: TRIS
• Created Date: Jul 31 1974 12:00AM