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NAO VOLUME 3 Exam Questions & Answers 100% Correct!!
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NAO VOLUME 3 Exam Questions & Answers 100% Correct!! The correct transposed RX for -1.00-.50x37 is? - ANSWERS-1.50 + 0.50 x 127 The correct transposition for +2.00 -2.00 x 060 is? - ANSWERSPlano +2.00 x 150 An uncut lens must be at least _______ mm in diameter to allow the edging of a 54 m...

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  • October 28, 2024
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  • 2024/2025
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  • nao volume 3 exam questions answers 100 correct
  • the correct transposed rx for 100 50x37 is a

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NAO VOLUME 3 Exam Questions &
Answers 100% Correct!!

The correct transposed RX for -1.00-.50x37 is? - ANSWERS-1.50 + 0.50 x 127



The correct transposition for +2.00 -2.00 x 060 is? - ANSWERSPlano +2.00 x 150



An uncut lens must be at least _______ mm in diameter to allow the edging of a 54 mm round lens
decentered 3 mm in: - ANSWERS60 mm



A +3.00 sphere lens has a front base curve of +6.25. What is the back surface curve? - ANSWERS-3.25



A -2.00 -1.00 x 045 lens has a front base curve of +6.25. What are the back surface curves? - ANSWERS-
8.25 -1.00



Moving the optical center of a plus lens inward from the correct PD results in _____ - ANSWERSBase in
prism



Where will the optical center appear in a lensometer when neutralizing a left lens for base in prism? -
ANSWERSTo the left of the target center



Glazing is a term used to indicate _____ - ANSWERSA defect that occurs when an anti-reflective lens is
tinted



Frequently, bicentric grinding (slab-off) is used as a means of obtaining prism in the reading field to
correct induced prism imbalance. The usual correction during the fabrication process is achieved by
grinding prism in the following direction: - ANSWERSup

, A patient stops in to see you for adjustment of his glasses. After careful inspection you find the only thing
wrong that there is too much pantoscopic tilt. To make the necessary adjustment you will: -
ANSWERSAngle the temples upward from the end pieces



If the RX is +2.00 -4.00 x 135, it would be necessary to decenter the lens _____to create 1.00 prism base
in : - ANSWERSnot possible



Rewrite the RX below, which is prescribed for a patient afflicted with double vision, so as to make better
balanced lenses:

OD -1.00 -0.50 x 090 5.00 BU

OS -1.25 - 0.50 x 090 1.00 BD - ANSWERSOD -1.00 -0.50 x 090 3.00 prism BU

OS -1.25 -0.50x 090 3.00 prism BD



Correct the imbalance in the following prescription by use of slab-off. Reading level is 10 mm:

OD +5.00 -2.00 x 090

OS +2.25 -3.00 x 090 - ANSWERS2.25 prism BU in OS

The lens aberration that produces a shorter focal length for rays near the edge of the lens than rays near
the optical axis is called: - ANSWERSSpherical aberration



The aberration affecting image shape when wearing high minus lenses is called: - ANSWERSbarrel
distortion



What type of prismatic effect is easiest to tolerate at the near point? - ANSWERSBase in



You can eliminate the effects of pantoscopic angle by: - ANSWERSRaising the optical center by 1/2 the
amount of tilt



1 base up ad 2 base in for a left eye would be found in which quadrant? - ANSWERSII



2 base down and 2 base out for left eye would be found in which quadrant? - ANSWERSIV

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