When ordering a six inch temple, its corresponding millimeter value is which
of the following?
A. 135 mm
B. 140 mm
C. 145 mm
D. 150 mm Right Ans - 150 mm
What is the focal length of a 2 diopter lens?
A. 500 cm
B. 39.37 inches
C. 500 mm
D. 2 meters Right Ans - 500 mm
Wavelengths are measured in
A. Meters
B. Decimeters
C. Centimeters
D. Nanometers Right Ans - Nanometers
Which of the following has the shortest and therefore most harmful
wavelength?
A. UVC
B. UVB
C. UVA
D. INFRARED Right Ans - UVC
When two light wavesw are in "in phase" they will
A. Destroy on another
B. Reduce each front by half
C. Compound one another
D. None of the above Right Ans - Compound one another
The cylinder axis tolerance for a 1.00D cylinder according to ANSI Z80.1 is
A. Plus or minus 7 degrees
B. Plus or minus 5 degrees
C. Plus or minus 3 degrees
D. Plus or minus 2 degrees Right Ans - Plus or minus 3 degrees
,A plus lens decentered "out" will result in a finished lens which is
A. Balanced
B. Thicker temporally
C. Thicker nasally
D. Uniform in edge thickness Right Ans - Thicker temporally
A minus lens decentered "out" will result in a finished lens which is
A. Balanced
B. Thicker temporally
C. Thicker nasally
D. Uniform in edge thickness Right Ans - Thicker nasally
An uncoated normal plastic lens will reflect approximately ______% of light.
A. 2%
B. 4%
C. 8%
D. 12% Right Ans - 8%
A lens having a minus curve on both front and back is called
A. Toric
B. Meniscus
C. Biconvex
D. Biconcave Right Ans - Biconcave
Give the RX +1.00 +1.00 x 45, how much of the +1.00 cylinder is in the effect at
axis 90?
A. 100%
B. 70%
C. 50%
D. 0 Right Ans - 50%
80 degrees from the specified axis, a cylinder will show
A. 5% of its power
B. 10% of its power
C. 50% of its power
D. 97% of its power Right Ans - 97% if its power
The type of patient often bothered by large magnified eye look is a
, A. Myope
B. Persbyope
C. Hyperope
D. Emmetrope Right Ans - Hyperope
A Box O graph is used to measure lenses for
A. Axis
B. Power
C. Thickness
D. Size Right Ans - Size
A presbyopic electrician that works on overhead wiring would benefit most
from
A. Executive bifocal
B. Near only readers
C. Double D
D. Round Segment Right Ans - Double D
A presbyopic golfer, when addressing the ball, is troubled by the placement of
this normal bifocal. Which of the following would pose the best solution as a
recreational golf glasses?
A. Executive bifocal fit 1mm lower
than standard
B. Double D
C. Quadrifocal
D. Round segment rotated to the temporal side of the lens Right Ans -
Round segment rotated to the temporal side of the lens
Which of the following is NOT one of the 6 muscles responsible for the
movement of the eye?
A. Superior Rectus
B. Inferior Rectus
C. Internal Rotator
D. Inferior Oblique Right Ans - Internal Rotator
The index of refraction of spectacle crown glass is
A. 1.49
B. 1.523
C. 1.53
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