Accession Number : ADA116122

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

Descriptive Note : Final rept. Jul-Nov 81,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX

Personal Author(s) : Provines,Wayne F ; Miller,J W ; Blevins,R H ; Fischer,Joseph R , Jr ; Tredici,Thomas J

PDF Url : ADA116122

Report Date : May 1982

Pagination or Media Count : 8

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)

Descriptors :   *Lenses, *Optical lenses, Impact tests, Resistance

Subject Categories : Medical Facilities, Equipment and Supplies
      Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE