NAO VOLUME 3 STUDY BANK 2026
VERIFIED SOLUTIONS GRADED A+
⩥ The absorption of light in lenses is classified by two variables. What
are they?
Answer: Tint and lens transmission
⩥ The denser the tint in a lens, the _____:
Answer: Less transmission of light through the lens
⩥ Standard transmission in sunlenses should range between:
Answer: 15% and 30%
⩥ If a person has exposure to sunlight at least 2 hours or more during the
day, their _____
Answer: Ability to adapt to night vision is compromised if they don't
protect their eyes from the sun exposure
⩥ A characteristic of a dark tinted glass lens with an RX of +4.00D
sphere would b_____
Answer: Dark in the center and lighter on the edge
, ⩥ Given a high plus or minus RX, which lens material would offer the
best choice for uniform density in a sunlens?
Answer: cr-39 plastic and trivex
⩥ Although this may be the most popular color for sunlenses, it is not
recommended for patients with emerging cataracts:
Answer: gray
⩥ _____ added to any color increases contrast:
Answer: yellow
⩥ _____ is better than _____ for improving contrast:
Answer: green
⩥ Glare is of more concern to which wearer?
Answer: cataract patient
⩥ _____ are generally inorganic materials (metals or minerals) that are
vacuum deposited to add color on glass lenses to give a uniform density
of color on the lenses:
Answer: vacuum color coatings
⩥ Which company introduced CR-39 plastic lenses?
VERIFIED SOLUTIONS GRADED A+
⩥ The absorption of light in lenses is classified by two variables. What
are they?
Answer: Tint and lens transmission
⩥ The denser the tint in a lens, the _____:
Answer: Less transmission of light through the lens
⩥ Standard transmission in sunlenses should range between:
Answer: 15% and 30%
⩥ If a person has exposure to sunlight at least 2 hours or more during the
day, their _____
Answer: Ability to adapt to night vision is compromised if they don't
protect their eyes from the sun exposure
⩥ A characteristic of a dark tinted glass lens with an RX of +4.00D
sphere would b_____
Answer: Dark in the center and lighter on the edge
, ⩥ Given a high plus or minus RX, which lens material would offer the
best choice for uniform density in a sunlens?
Answer: cr-39 plastic and trivex
⩥ Although this may be the most popular color for sunlenses, it is not
recommended for patients with emerging cataracts:
Answer: gray
⩥ _____ added to any color increases contrast:
Answer: yellow
⩥ _____ is better than _____ for improving contrast:
Answer: green
⩥ Glare is of more concern to which wearer?
Answer: cataract patient
⩥ _____ are generally inorganic materials (metals or minerals) that are
vacuum deposited to add color on glass lenses to give a uniform density
of color on the lenses:
Answer: vacuum color coatings
⩥ Which company introduced CR-39 plastic lenses?
