NAO VOLUME 3 MATH QUESTIONS AND ANSWERS 100% CORRECT!! 2024
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NAO
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NAO
NAO VOLUME 3 MATH QUESTIONS AND ANSWERS 100% CORRECT!! 2024
The correct transposed RX for -1.00-.50x37 is? - ANSWER -1.50 + 0.50 x 127
The correct transposition for +2.00 -2.00 x 060 is? - ANSWER Plano +2.00 x 150
An uncut lens must be at least _______ mm in diameter to allow t...
VI
CORRECT!! 2024
TU
IS
The correct transposed RX for -1.00-.50x37 is? - ANSWER -1.50 + 0.50 x 127
M
The correct transposition for +2.00 -2.00 x 060 is? - ANSWER Plano +2.00 x 150
O
An uncut lens must be at least _______ mm in diameter to allow the edging of a 54 mm
round lens decentered 3 mm in: - ANSWER 60 mm
A
A +3.00 sphere lens has a front base curve of +6.25. What is the back surface curve? -
ANSWER -3.25
N
A -2.00 -1.00 x 045 lens has a front base curve of +6.25. What are the back surface
curves? - ANSWER -8.25 -1.00
JP
Moving the optical center of a plus lens inward from the correct PD results in _____ -
ANSWER Base in prism
Where will the optical center appear in a lensometer when neutralizing a left lens for
base in prism? - ANSWER To the left of the target center
Glazing is a term used to indicate _____ - ANSWER A 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: - ANSWER
up
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: - ANSWER Angle the temples upward from the end pieces
A
If the RX is +2.00 -4.00 x 135, it would be necessary to decenter the lens _____to
VI
create 1.00 prism base in : - ANSWER not possible
Rewrite the RX below, which is prescribed for a patient afflicted with double vision, so
TU
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 - ANSWER OD -1.00 -0.50 x 090 3.00 prism BU
OS -1.25 -0.50x 090 3.00 prism BD
IS
Correct the imbalance in the following prescription by use of slab-off. Reading level is
10 mm:
OD +5.00 -2.00 x 090
M
OS +2.25 -3.00 x 090 - ANSWER 2.25 prism BU in OS
O
You are fitting a patient with a stock frame, 24 DBL, 44 eve size and 137 mm skull
temples. The distance PD is only 62 mm. If by some unfortunate error the lenses are
not decentered at all, how much prism is created in each eye?
A
RX: OU -2.25 -1.50 x 045 - ANSWER 0.5 prism BI
N
A situation where the frame front is somewhat twisted, with the planes of the two lenses
being out of line with one another, is called: - ANSWER Skewed bridge
JP
When a frame is said to have a parabolic curve (or positive face form), the following
condition is meant: - ANSWER The bridge of the frame is out further than then end
pieces
If the lenses of a patient wearing -8.00 spheres are brought closer or his/her eyes, what
if any effect will this have on the lenses? - ANSWER Increase minus power effect
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