American Board of Opticianry (ABO) Practice Test

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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.

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