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