Impact Resistance - FINAL Flashcards
impact resistance of lenses is regulated by:
FDA
lens must withstand the impact of _ steel ball
5/8
the manufacturer must test _%/material
10
lenses exempt from the drop ball testing:
biconcave, prism seg multifocals, slab-off lenses, lenticular, custom laminate lenses, cement assembly, iseikonic
for prescription glasses, drop ball testing records must be kept for _ years; _ years for non-rx
3; 0
the main aspect of spectacles for Duty to Warn is _
impact resistance benefits of polycarb and trivex
The OLA states: you must documents that you informed the patient on all lens options, note which material you _, and material _
advised; they selected
what does the Doctrine of Respondance state?
an employer is liable for all actions that occur within the scope of the employee’s professional responsibility
3 categories of eyewear?
dress; safety; sports
dress eyewear must pass _, and if glass is used, it must be _
impact resistance standards; tempered
2 categories of safety eyewear:
basic impact and high impact
you cannot mix safety lenses with regular frames or vice versa
safety frames must have safety lenses
basic impact safety lens drop ball size:
1” steel ball
basic impact have a minimum thickness of _mm, except +3.00 or greater can hav edge thickness no less than 2.5mm
3
high mass impact test for safety frames tests:
frame and lens together
