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Optician Practical Exam Study Material Questions and Answers
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Optician Practical Exam Study Material Questions and Answers a lens focal length may be altered by? changing the curvature of one surface what controls the amount of light that enters the eye? Iris Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:02 / ...

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  • September 1, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • optician practical exam study material questions a
  • a lens focal length may be altered by changing th
  • what controls the amount of light that enters the

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Optician Practical Exam Study Material
Questions and Answers
a lens focal length may be altered by? - answer changing the curvature of one
surface

what controls the amount of light that enters the eye? - answer Iris

lights changing direction as it passes from one medium to another is called what? -
answer refraction

meniscus, equiconcave and flat concave are all, what? - answer minus lenses

what term is used to describe the eyes tendency to TURN from its normal position? -
answer phoria

refractive condition where light focuses directly ON the retina...? - answer
emmetriopia

one convex and one concave surface is known as... - answer a meniscus lens

best lens treatment to reduce water and road glare? - answer polarized

establishes commercial and industry standards.. - answer ANSI

hard resin used in plastic - answer cr39

multifocals are measured to the... - answer lower edge of lens not frame

corneas index of refraction - answer 1.37

lens characteristic that corrects astigmatism is called.... - answer cylinder power

progressive marks are ______ mm apart - answer 34 mm

what prism could help EXOtropia? - answer base in prism

what prism could help ESOtropia? - answer base out prism

what happens if you move a PLUS lens CLOSER to the eye? - answer loses
perceived power

what happens if you move a PLUS lens AWAY from the eye? - answer gains
perceived power

, what happens if you move a MINUS lens CLOSER to the eye? - answer gains
perceived power

what happens if you move a MINUS lens AWAY from the eye? - answer loses
perceived power

Vertical prism U&U and D&D cancel out, but U&D you ____ - answer ADD U and D

horizontal prism O&O add, I&I add, But I&O____ - answer Cancel ea other I&O

TP @ 90 first column is? - answer 0,30,45,60,90

light travels at.... - answer 186,000 mps

both sides of lens is minus? - answer biconcave

both sides of lens are plus? - answer biconvex

plus lens decentered out will make the lens.... - answer thicker temporally

minus lens decentered out will make the lens.... - answer thicker nasally

ANSI standard on pd? - answer 2.5mm

ANSI for vertical prism? - answer .33

ANSI for horizontal prism? - answer .67

ANSI for segs? - answer 1mm

ANSI for cyl axis .25-.50 - answer 7 degrees

ANSI for cyl axis 0-.25 - answer 14 degrees

ANSI for cyl axis .50-.75 - answer 5 degrees

ANSI for cyl axis .75-1.50 - answer 3 degrees

ANSI for cyl axis greater than 1.50 - answer 2 degrees

ANSI for Sphere pwr up to 6.50 - answer .13D

ANSI for Sphere pwr above 6.50 is - answer 2%

ANSI for Cyl power up to 2.00D - answer .13D

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