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 exam with confidence. Our comprehensive resources, including quizzes and study materials, will help you master essential opticianry concepts and pass the American Board of Opticianry exam with ease. Get started today!

Practice this question and more.


What does the closet distance between lenses indicate in opticianry?

  1. Lens thickness

  2. Lens curvature

  3. Pupil distance

  4. Frame fit

The correct answer is: Frame fit

The closest distance between lenses in opticianry refers to the distance between the left and right lenses on a pair of glasses. This distance is important for ensuring a proper frame fit for the wearer. Options A, B, and C are all incorrect as they do not directly relate to the concept of closest distance between lenses.