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ABO/NAO 5 Exam Questions and Answers 100% Pass

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ABO/NAO 5 Exam Questions and Answers 100% Pass

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Uploaded on
January 2, 2026
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  • abonao 5 exam questions and answers 100 pass

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ABO/NAO 5 Exam Questions and
Answers 100% Pass

what is the average convergence distance in children - CORRECT ANSWER-

2mm instead of 3mm in adults

what is the refractive index of highlite lenses - CORRECT ANSWER-1.70

chem-tempering makes a clear glass lens more impact resistant by placing the lens

in a potassium nitrate bath. the lens undergoes a process known as what? -

CORRECT ANSWER-ion exchange

what is the formula for the index of refraction - CORRECT ANSWER-index of

refraction=velocity of light in air over velocity of light in other media

what is polyamide - CORRECT ANSWER-a nylon-based material that is very

strong. it can be made thinner and is lighter than cellulose acetate. can be made

translucent, is resistant to chemicals and solvents and is hypoallergenic

when fitting a patient with progressive addition lenses for optimum performance,

what is the vertex and pantoscopic tilt, and is face form required? - CORRECT

ANSWER-the frame should have sufficient face form, a short vertex distance as

long as the eyelashes do not touch the lens and should be adjustable for

pantoscopic angle of 10 to 12 degrees
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