ABO NOCE Basic Opticianry

Category - Instrumentation

Vertex distance can be measured with a:
  1. Cross cylinder
  2. PAM
  3. Distometer
  4. Pinhole disc
Explanation
Answer: C - Distometer

Vertex distance can be measured with a distometer. The vertex distance is the distance from the cornea of the patient’s eye to the lens inserted in the trial frame, refractor, or glasses.
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