American Board of Opticianry (ABO) Practice Test

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Prepare for the ABO (American Board of Opticianry) Test with interactive flashcards and hundreds of multiple choice questions. Updated for 2024 to help you excel on exam day

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What type of PD best compensates for facial asymmetry?

-6.50
-7.50
-1.00
-2.00

The correct answer is: -7.50

Some may assume that the answer is -6.50 or -7.50 because they are negative numbers and may be associated with facial asymmetry. However, the correct answer of -7.50 has a larger magnitude, making it a better option for compensating for facial asymmetry. Choices C and D may seem like valid numbers, but they are too small to make a significant difference in correcting facial asymmetry. Choice A is irrelevant and not related to PD or facial asymmetry.