Certified Ophthalmic Assistant Practice Exam

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How is the calibration of the application tonometer checked?

  1. By using a ruler

  2. By using a stopwatch

  3. By attaching a measured weight to the tonometer balancing arm at 0, 2, and 6

  4. By visually inspecting the tonometer

The correct answer is: By attaching a measured weight to the tonometer balancing arm at 0, 2, and 6

The calibration of the applanation tonometer is checked by attaching a measured weight to the tonometer balancing arm at specific points, typically at 0, 2, and 6. This method ensures that the tonometer is providing accurate and consistent readings when it comes into contact with the eye. Using a ruler, a stopwatch, or visually inspecting the tonometer will not accurately assess its calibration like the method described in option C.

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