W10 Safety Eyewear Flashcards
lenses have the disadvantage of being heavy, less impact-resistant, and must be hardened.
Glass
In general, the higher the index of refraction
the thinner the lens
the flatter the lens
the lower the abbe value
When safety is the primary concern which lens has
traditionally
been the number-one choice
Polycarb
Those purchasing safety or sports eyewear
Children
People with good acuity in one eye only
monocular individuals
Safety is a primary concern
Categories of eyewear
Sports eyewear, dress eyewear, and safety eyewear.
has the biggest impact on the impact resistance of a lens
Back surface scratches
Which of the following has the least amount of impact resistance
AR coated CR-39
The FDA requires that records be kept for how many years after the purchase of eyeglasses
3
What is the minimum thickness requirement for dress ophthalmic lenses in the US?
there is no minimum thickness requirement
selectively testing a statistically significant number of lenses in a manufactured group
Batch testing
Which of the following lenses can be batch tested for impact resistance?
Mass-produced sunglasses and plastic lenses
By law, a patient
must
be given a copy of their updated spectacle lens prescription by the end of the exam, regardless of whether or not they ask for it
and
regardless of
whether or not the prescription has changed.
The eyeglass rule
By law, lenses must be impact resistant
true
Which of the following organizations mandate the impact resistance of ophthalmic lenses
FDA
Which of the following organizations regulate safety practices in the workplace and educational settings
OSHA
