Certified Ophthalmic Assistant Practice Exam

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Routine maintenance of a phoropter should include...

  1. Applying oil to movable parts

  2. Keeping it uncovered

  3. Placing it near a window

  4. Cleaning the back lenses with glass cleaner

The correct answer is: Cleaning the back lenses with glass cleaner

Routine maintenance of a phoropter should include cleaning the back lenses with glass cleaner because any dust, smudges, or debris on the lenses can affect the accuracy of the refraction results. Keeping the lenses clean is essential for providing precise and reliable refraction measurements to the patients. Applying oil to movable parts is not recommended as it can attract dust and dirt, leading to potential damage to the phoropter. Keeping the phoropter uncovered and placing it near a window expose it to dust, sunlight, and other environmental factors that can degrade its performance and longevity.

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