ABO Practical Exam Study Questions with
Verified Answers
1: What does ABO stand for in the context of the ABO Practical Exam? -
correct answer - ABO stands for American Board of Opticianry.
2: What is the primary focus of the ABO Practical Exam? - correct answer -
The primary focus is to assess practical skills and knowledge in opticianry,
including lensometry, eyewear fitting, and troubleshooting.
3: What is lensometry? - correct answer -
Lensometry is the process of measuring the prescription of eyeglass lenses
using a lensometer.
4: What is the purpose of a lensometer? - correct answer -
A lensometer is used to verify the correctness of eyeglass prescriptions,
measure lens power, and mark optical centers.
5: What is the first step in using a lensometer? - correct answer -
The first step is to calibrate the lensometer to ensure accurate
measurements.
, 6: How do you calibrate a lensometer? - correct answer -
Calibration involves adjusting the lensometer to zero using a known
standard lens.
7: What is the optical center of a lens? - correct answer -
The optical center is the point on the lens where light passes through
without being refracted.
8: Why is marking the optical center important? - correct answer -
Marking the optical center ensures proper alignment of the lens in the
frame, providing optimal vision correction.
9: What is prism in eyewear? - correct answer -
Prism in eyewear is used to correct eye alignment issues by bending light
before it enters the eye.
10: How do you measure prism in a lens using a lensometer? - correct
answer -
Prism is measured by observing the displacement of the target image in the
lensometer.
11: What is the ANSI standard for lens thickness? - correct answer -
Verified Answers
1: What does ABO stand for in the context of the ABO Practical Exam? -
correct answer - ABO stands for American Board of Opticianry.
2: What is the primary focus of the ABO Practical Exam? - correct answer -
The primary focus is to assess practical skills and knowledge in opticianry,
including lensometry, eyewear fitting, and troubleshooting.
3: What is lensometry? - correct answer -
Lensometry is the process of measuring the prescription of eyeglass lenses
using a lensometer.
4: What is the purpose of a lensometer? - correct answer -
A lensometer is used to verify the correctness of eyeglass prescriptions,
measure lens power, and mark optical centers.
5: What is the first step in using a lensometer? - correct answer -
The first step is to calibrate the lensometer to ensure accurate
measurements.
, 6: How do you calibrate a lensometer? - correct answer -
Calibration involves adjusting the lensometer to zero using a known
standard lens.
7: What is the optical center of a lens? - correct answer -
The optical center is the point on the lens where light passes through
without being refracted.
8: Why is marking the optical center important? - correct answer -
Marking the optical center ensures proper alignment of the lens in the
frame, providing optimal vision correction.
9: What is prism in eyewear? - correct answer -
Prism in eyewear is used to correct eye alignment issues by bending light
before it enters the eye.
10: How do you measure prism in a lens using a lensometer? - correct
answer -
Prism is measured by observing the displacement of the target image in the
lensometer.
11: What is the ANSI standard for lens thickness? - correct answer -
