Which lens is recommended for drill mounted frames?
A) Trivex
B) CR-39
C) Polycarbonate
Correct Answer:
Verified
Q41: What is the vision range in the
Q42: Which of the following is not a
Q43: What is the ABBE value of Crown
Q44: Which is not a factor in non-adaptation
Q45: Which of the following lenses has the
Q47: Which lens has the least UV absorption?
A)CR-39
B)Polycarb
C)Crown
Q48: A polarized lens always protects against 100%
Q49: What is the "bullet proof" lens of
Q50: Prentices rule for prism: Diopters (?) are
Q51: When light passes through a prism:
A)It spreads
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