American Board of Opticianry (ABO) Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the ABO certification with our comprehensive test preparation resources. Engage with interactive quizzes and detailed questions created specifically for the ABO exam. Enhance your understanding of opticianry concepts and ace your certification test!

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

What type of PD best compensates for facial asymmetry?

  1. -6.50

  2. -7.50

  3. -1.00

  4. -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.

More Questions Like This