1|Page
ABO Practical Examination, American Board of
Opticianry||Verified Exam!!!||, 2026/2027 – Certified
Optician Skills and Abilities Competency
Assessment||Newest Exam!!!
A _____ occurs when the crystalline lens opacifies or
becomes cloudy, which prevents light from passing
through. - Answer-Cataract
The formula which translates variables such as lenses and
decentration into prismatic effect is called: - Answer-
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 - Answer-D) Greater
magnification
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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 - Answer-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 - Answer-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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D) 0.60 diopters base out - Answer-A) 1.80 diopters base
out
Which of the following is the function of cross hair setting
(right)?
A) Take monocular or binocular distance measurements
B) To center the wire upon the reflection of light from the
patient's pupil
C) Display the monocular measurement for the left eye
D) Rests against the patient's forehead - Answer-B) To
center the wire upon the reflection of light from the
patient's pupil
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 - Answer-A) Increasing
the retroscopic tilt
The thickness of an AR coating is measured in:
A)Millimeters
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B) Centimeters
C)Inches
D) Angstroms - Answer-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 - Answer-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 - Answer-D) Position the patient
ABO Practical Examination, American Board of
Opticianry||Verified Exam!!!||, 2026/2027 – Certified
Optician Skills and Abilities Competency
Assessment||Newest Exam!!!
A _____ occurs when the crystalline lens opacifies or
becomes cloudy, which prevents light from passing
through. - Answer-Cataract
The formula which translates variables such as lenses and
decentration into prismatic effect is called: - Answer-
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 - Answer-D) Greater
magnification
,2|Page
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 - Answer-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 - Answer-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
,3|Page
D) 0.60 diopters base out - Answer-A) 1.80 diopters base
out
Which of the following is the function of cross hair setting
(right)?
A) Take monocular or binocular distance measurements
B) To center the wire upon the reflection of light from the
patient's pupil
C) Display the monocular measurement for the left eye
D) Rests against the patient's forehead - Answer-B) To
center the wire upon the reflection of light from the
patient's pupil
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 - Answer-A) Increasing
the retroscopic tilt
The thickness of an AR coating is measured in:
A)Millimeters
, 4|Page
B) Centimeters
C)Inches
D) Angstroms - Answer-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 - Answer-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 - Answer-D) Position the patient
