NAO VOLUME {IV} EXAM QUESTIONS |GUARANTEED PASS

NAO VOLUME {IV} EXAM
QUESTIONS |GUARANTEED PASS

The amount of reflection of each surface of CR-39 plastic lenses is
approximately: - ACCURATE ANSWERS✔✔ 4%


The absorption of light in lenses is classified by two variables. What are
they? - ACCURATE ANSWERS✔✔ Tint and lens transmission


The denser the tint in a lens, the _____: - ACCURATE ANSWERS✔✔
Less transmission of light through the lens


Standard transmission in sunlenses should range between: -
ACCURATE ANSWERS✔✔ 15% and 30%


If a person has exposure to sunlight at least 2 hours or more during the
day, their _____ - ACCURATE ANSWERS✔✔ 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_____ - ACCURATE ANSWERS✔✔ 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? - ACCURATE ANSWERS✔✔
cr-39 plastic and trivex


Although this may be the most popular color for sunlenses, it is not
recommended for patients with emerging cataracts: - ACCURATE
ANSWERS✔✔ gray


_____ added to any color increases contrast: - ACCURATE
ANSWERS✔✔ yellow


_____ is better than _____ for improving contrast: - ACCURATE
ANSWERS✔✔ green


Glare is of more concern to which wearer? - ACCURATE
ANSWERS✔✔ 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: - ACCURATE ANSWERS✔✔ vacuum color
coatings


Which company introduced CR-39 plastic lenses? - ACCURATE
ANSWERS✔✔ PPG Industries