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American Board of Opticianry Exam Questions and Correct Answers
American Board of Opticianry Exam Questions and Correct Answers
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American Board of Opticianry ExamQuestions and Correct Answers
If the frame front touches the eyebrows, what is NOT a possible solution to the problem?
A) Increasing the retroscopic tilt
B) Choosing another frame
C) Decreasing the distance between the nose pads
D) Increasing the pantoscopic tilt - CORRECT ANSWERS:A) Increasing the retroscopic tilt
The thickness of an AR coating is measured in:
A)Millimeters
B) Centimeters
C)Inches
D) Angstroms - CORRECT ANSWERS:D) Angstroms
What is back vertex focal length?
A) Distance between the image and the object
B) Difference between the focal length and lens power
C) Distance between a minus lens and its radius of curvature
D) Distance between a plus lens and the focal point of lens - CORRECT ANSWERS:D) Distance between a
plus lens and the focal point of lens
What is the next step after confirming the appropriate dial setting on the pupilometer?
A) Record the readings
B) position the pupilometer
C) Adjust the crosshair setting
D) Position the patient - CORRECT ANSWERS:D) Position the patient
,Lenses, which are classified as cosmetic, have less effect over the cones of the eye, and the rods take
over to adjust for transmission of an illumination. What does these lenses transmit?
A) Visible light below 40%
B) Visible light above 40%
C)Only ultraviolet and infrared light
D) Mostly blue light - CORRECT ANSWERS:B) Visible light above 40%
Which of the following combinations of prism is a cancelling situation?
A) Base in and base out
B) Base out and base out
C) Base in and base down
D) Base up and base down - CORRECT ANSWERS:A) Base in and base out
When adjusting the frame, the front can be lowered by using the following adjustment:
A) By spreading the pads further apart
B) Using more pantoscopic tilt
C) By bending the pad arms down
D) By bringing the pads closer together - CORRECT ANSWERS:A) By spreading the pads further apart
Determine imbalance at the reading level in the following prescription (10mm reading depth)
OD: -4.00 -2.00 X 090
OS: -1.00 -3.00 X 180
A) 4.00 diopters
B) 1.00 diopter
C) No imbalance
D) 2.00 diopters - CORRECT ANSWERS:C) No imbalance
, A _____ occurs when the crystalline lens opacifies or becomes cloudy, which prevents light from passing
through. - CORRECT ANSWERS:Cataract
The formula which translates variables such as lenses and decentration into prismatic effect is called: -
CORRECT ANSWERS:Prentice's rule
Which of the following is not an attribute of aspheric lenses?
A) Flatter
B) Wider fields of vision
C) Thinner
D) Greater magnification - CORRECT ANSWERS:D) Greater magnification
If the adjustable pads on a metal frame are repositioned downwards into the bridge of the frame the
resulting effect on the fit will be to:
A) Lower the front
B) Decrease the retroscopic angle
C) Raise the front
D) Increase the pantoscopic angle - CORRECT ANSWERS:C) Raise the front
The term for the refractive condition where light comes to a focus directly on the retina is?
A) Myopia
B) Astigmatism
C) Hyperopia
D) Emmetropia - CORRECT ANSWERS:D) Emmetropia
The optical center of a +3.00 -2.00 X 180 lens is de entered 6mm temporally from the patient's line of
sight. How much prism is created by this error?
A) 1.80 diopters base out
B) 0.60 diopters base in
C) 1.80 diopters base in
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