American Board of Opticianry (ABO) Certification Practice Test

American Board of Opticianry (ABO) Certification Practice Test

This test is designed to help you prepare for the actual ABO exam by covering a wide range of topics, including optical theory, lensometry, frame selection, and patient care.

Each question is multiple-choice, with four possible answers.

Take your time, read each question carefully, and choose the best answer.

Good luck!

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American Board of Opticianry (ABO) Certification Practice Test

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Your answers are highlighted below.
Question 1
What is the primary function of the cornea?
A
To focus light onto the retina
B
To control the amount of light entering the eye
C
To produce tears
D
To provide color vision
Question 2
Which of the following materials is most impact-resistant for eyeglass lenses?
A
Glass
B
Polycarbonate
C
CR-39
D
High-index plastic
Question 3
What does the term "PD" stand for in opticianry?
A
Pupillary Distance
B
Prism Diopter
C
Prescription Detail
D
Peripheral Depth
Question 4
Which lens material has the lowest Abbe value?
A
CR-39
B
Polycarbonate
C
Crown glass
D
Trivex
Question 5
What is the purpose of a lenticular lens?
A
To reduce chromatic aberration
B
To minimize lens thickness in high prescriptions
C
To enhance UV protection
D
To increase magnification 
Question 6
Which of the following is NOT a type of multifocal lens?
A
Bifocal
B
Trifocal
C
Progressive
D
Monofocal
Question 7
What is the standard index of refraction for CR-39 lenses?
A
1.49
B
1.56
C
1.60
D
1.67
Question 8
Which of the following frame materials is hypoallergenic?
A
Nickel
B
Titanium
C
Monel
D
Stainless steel
Question 9
What is the primary purpose of an anti-reflective coating?
A
To reduce glare
B
To increase lens thickness
C
To enhance color perception
D
To block UV light
Question 10
Which instrument is used to measure the power of a lens?
A
Keratometer
B
Lensometer
C
Phoropter
D
Retinoscope
Question 11
What is the average adult PD range?
A
50-55 mm
B
54-68 mm
C
70-75 mm
D
76-80 mm
Question 12
Which lens design corrects for astigmatism?
A
Spherical
B
Cylindrical
C
Aspheric
D
Bifocal
Question 13
What does the term "base curve" refer to?
A
The curvature of the lens front surface
B
The curvature of the lens back surface
C
The thickness of the lens edge
D
The power of the lens
Question 14
Which of the following is a symptom of prism imbalance?
A
Headache
B
Blurred vision
C
Double vision
D
All of the above
Question 15
What is the purpose of a seg height measurement?
A
To determine the optical center of the lens
B
To align the bifocal segment with the pupil
C
To measure the frame width
D
To calculate the base curve
Question 16
Which of the following is NOT a type of lens tint?
A
Gradient
B
Solid
C
Photochromic
D
Aspheric
Question 17
What is the primary function of the retina?  
A
To focus light
B
To convert light into neural signals
C
To control pupil size
D
To produce aqueous humor
Question 18
Which of the following is a characteristic of high-index lenses?
A
Thinner and lighter
B
Thicker and heavier
C
Lower Abbe value
D
Both a and c
Question 19
What is the purpose of a pantoscopic tilt?
A
To align the lens with the visual axis
B
To reduce lens thickness
C
To increase frame durability
D
To enhance UV protection
Question 20
Which of the following is NOT a type of frame hinge?
A
Spring hinge
B
Barrel hinge
C
Butt hinge
D
Lenticular hinge
Question 21
What is the primary purpose of a UV coating?
A
To reduce glare
B
To block harmful ultraviolet rays
C
To enhance color perception
D
To increase lens durability
Question 22
Which of the following is a common frame adjustment tool?
A
Lensometer
B
Plier
C
Keratometer
D
Retinoscope
Question 23
What is the term for the measurement of the frame's eye size?
A
A measurement
B
B measurement
C
C measurement
D
D measurement
Question 24
Which of the following is a symptom of incorrect PD?
A
Eye strain
B
Blurred vision
C
Headache
D
All of the above
Question 25
What is the purpose of a bridge in eyeglass frames?
A
To connect the two lenses
B
To rest on the nose
C
To hold the temples
D
Both a and b
Question 26
Which of the following is NOT a type of lens coating?
A
Anti-reflective
B
Scratch-resistant
C
UV protection
D
Aspheric
Question 27
What is the term for the distance between the lenses in a frame?
A
Bridge size
B
DBL (Distance Between Lenses)
C
PD
D
Seg height
Question 28
Which of the following is a characteristic of polycarbonate lenses?
A
High impact resistance
B
Low Abbe value
C
Lightweight
D
All of the above
Question 29
What is the purpose of a temple in eyeglass frames?  
A
To hold the lenses in place
B
To rest on the ears
C
To connect the bridge
D
To adjust the PD
Question 30
Which of the following is NOT a type of lens material?
A
CR-39
B
Polycarbonate
C
Trivex
D
Aspheric
Question 31
What is the term for the measurement of the frame's vertical size?
A
A measurement
B
B measurement
C
C measurement
D
D measurement
Question 32
Which of the following is a symptom of incorrect seg height?
A
Blurred vision
B
Eye strain
C
Headache
D
All of the above
Question 33
What is the purpose of a nose pad in eyeglass frames?
A
To provide comfort
B
To adjust the frame fit
C
To hold the lenses in place
D
Both a and b
Question 34
Which of the following is a characteristic of Trivex lenses?
A
High impact resistance
B
Lightweight
C
Good optical clarity
D
All of the above 
Question 35
What is the term for the measurement of the frame's horizontal size?
A
A measurement
B
B measurement
C
C measurement
D
D measurement
Question 36
Which of the following is a symptom of incorrect base curve?
A
Distorted vision
B
Eye strain
C
Headache
D
All of the above
Question 37
What is the purpose of a rimless frame design?
A
To reduce weight
B
To enhance aesthetics
C
To increase durability
D
Both a and b
Question 38
Which of the following is a characteristic of high-index lenses?
A
Thinner and lighter
B
Higher Abbe value
C
Lower cost
D
Both a and b
Question 39
What is the term for the measurement of the frame's bridge size?
A
A measurement
B
B measurement
C
C measurement
D
D measurement 
Question 40
Which of the following is a symptom of incorrect pantoscopic tilt?
A
Distorted vision
B
Eye strain
C
Headache
D
All of the above
Question 41
What is the purpose of a semi-rimless frame design?
A
To reduce weight
B
To enhance aesthetics
C
To increase durability
D
Both a and b 
Question 42
Which of the following is a characteristic of CR-39 lenses?
A
Low cost
B
Good optical clarity
C
High impact resistance
D
Both a and b
Question 43
What is the term for the measurement of the frame's temple length?
A
A measurement
B
B measurement
C
C measurement
D
D measurement
Question 44
Which of the following is a symptom of incorrect frame fit?
A
Discomfort
B
Slippage
C
Pressure points
D
All of the above
Question 45
What is the purpose of a full-rim frame design?
A
To provide maximum lens protection
B
To enhance aesthetics
C
To increase durability
D
Both a and c
Question 46
Which of the following is a characteristic of glass lenses?
A
High optical clarity
B
Heavy weight
C
Low impact resistance
D
All of the above
Question 47
What is the term for the measurement of the frame's lens size?
A
A measurement
B
B measurement
C
C measurement
D
D measurement
Question 48
Which of the following is a symptom of incorrect lens power?
A
Blurred vision
B
Eye strain
C
Headache
D
All of the above
Question 49
What is the purpose of a rimless frame design?
A
To reduce weight
B
To enhance aesthetics
C
To increase durability
D
Both a and b
Question 50
Which of the following is a characteristic of polycarbonate lenses?
A
High impact resistance
B
Low Abbe value
C
Lightweight
D
All of the above
Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results
There are 50 questions to complete.

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