Drop-Ball Impact Resistance of Ophthalmic Lenses--Comparison of Tint, Material, Treatment Process, and Drilling.

Abstract

Over 4,000 finished ophthalmic lenses were subjected to multiple drop-ball testing. Lenses varied in material, thickness, prescription, and tint. Lenses with drilled holes for rimless mounting generally were less impact-resistant. Hardened tinted-glass lenses and CR-39 lenses showed less impact effects due to drilling than similar clear-glass lenses. The chemicals added to glass for tinting apparently increased impact-resistance properties. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1982
Accession Number
ADA116122

Entities

People

  • J. W. Miller
  • Joseph R. Fischer Jr.
  • R. H. Blevins
  • Thomas J. Tredici
  • Wayne F. Provines

Organizations

  • United States Air Force School of Aerospace Medicine

Tags

Communities of Interest

  • Biomedical
  • Space

DTIC Thesaurus Topics

  • Aerospace Medicine
  • Air Force
  • Air Force Facilities
  • Air Force Personnel
  • Chi Square Test
  • Drilling
  • Glass
  • Government Procurement
  • Governments
  • Information Science
  • Materials
  • Plastic Lenses
  • Protective Equipment
  • Quality Control
  • Resistance
  • Statistical Analysis
  • Thickness

Readers

  • Circadian Sleep-Wake Regulation and Chronobiology
  • Geotechnical Engineering.
  • Reinforced Composite Materials