Practice Quiz

Ophthalmic Assistant

Category - Supplemental Skills

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When performing a contact A-scan, pressing the probe on the eye too hard can do what to the axial length measurement?
  1. Cause it to be bigger than it actually is
  2. Cause it to be smaller than it actually is
  3. Cause the machine to malfunction
  4. It does not make a difference
Explanation
Answer: B - Cause it to be smaller than it actually is

One disadvantage to using a contact A-scan is that the axial length may be smaller than it really is due to the force of pressing the probe on the eye too hard.
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