American Board of Opticianry Exam
[ACTUAL EXAM] LATEST VERSION
[QUESTIONS AND ANSWERS] WITH
PRACTICE EXAM DETAILED AND
VERIFIED FOR GUARANTEED PASS-
LATEST UPDATE 2025 GRADED A
(BRAND NEW!!)
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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔C) No imbalance
A _____ occurs when the crystalline lens opacifies or becomes cloudy, which prevents
light from passing through. - ✔✔✔✔✔Cataract
The formula which translates variables such as lenses and decentration into prismatic
effect is called: - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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
D) 0.60 diopters base out - ✔✔✔✔✔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 - ✔✔✔✔✔B) To center the wire upon the
reflection of light from the patient's pupil
Which of the following is an advantage of Propionate as a frame material?
A) Propionate is more difficult to create wraparound and contoured frames
B) Propionate is more sensitive to warm weather
C) Propionate frames do not hold their adjustments
D) Propionate is less sensitive to warm weather - ✔✔✔✔✔D) Propionate is less
sensitive to warm weather
Plus lenses have a _____ focal point.
A) Virtual
B) Real
C) Arbitrary
D) Complex - ✔✔✔✔✔B) Real
What kind of prism is induced when eyewear, with minus lenses, is fabricated with
optical centers that are wider than the patient's PD?
A) Base up
B) Base down
C) Base in
D) Base out - ✔✔✔✔✔C) Base in
When light interim the eye, without corrective lenses, comes to a focus in front of the
retina, the patient's refractive error is?
A) Myopia
B) Hyperopia
C) Annimetropia
D) Presbyopia - ✔✔✔✔✔A) Myopia
Which of the following if the function of a lensometer?
A) Measuring the spherical power, cylindrical power and axis, as the optical center of a
lens
B) Reading base curves
C) Conducting accurate measurements
[ACTUAL EXAM] LATEST VERSION
[QUESTIONS AND ANSWERS] WITH
PRACTICE EXAM DETAILED AND
VERIFIED FOR GUARANTEED PASS-
LATEST UPDATE 2025 GRADED A
(BRAND NEW!!)
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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔C) No imbalance
A _____ occurs when the crystalline lens opacifies or becomes cloudy, which prevents
light from passing through. - ✔✔✔✔✔Cataract
The formula which translates variables such as lenses and decentration into prismatic
effect is called: - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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 - ✔✔✔✔✔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
D) 0.60 diopters base out - ✔✔✔✔✔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 - ✔✔✔✔✔B) To center the wire upon the
reflection of light from the patient's pupil
Which of the following is an advantage of Propionate as a frame material?
A) Propionate is more difficult to create wraparound and contoured frames
B) Propionate is more sensitive to warm weather
C) Propionate frames do not hold their adjustments
D) Propionate is less sensitive to warm weather - ✔✔✔✔✔D) Propionate is less
sensitive to warm weather
Plus lenses have a _____ focal point.
A) Virtual
B) Real
C) Arbitrary
D) Complex - ✔✔✔✔✔B) Real
What kind of prism is induced when eyewear, with minus lenses, is fabricated with
optical centers that are wider than the patient's PD?
A) Base up
B) Base down
C) Base in
D) Base out - ✔✔✔✔✔C) Base in
When light interim the eye, without corrective lenses, comes to a focus in front of the
retina, the patient's refractive error is?
A) Myopia
B) Hyperopia
C) Annimetropia
D) Presbyopia - ✔✔✔✔✔A) Myopia
Which of the following if the function of a lensometer?
A) Measuring the spherical power, cylindrical power and axis, as the optical center of a
lens
B) Reading base curves
C) Conducting accurate measurements
