Practice Quiz

Certified Ophthalmic Medical Technologist (COMT)

Category - COMT

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Which statement best describes the characteristics of plus lenses?

  1. The temporal edge is thicker.
  2. They are thickest at the optic center.
  3. The edge opposite the direction of decentration is thicker.
  4. The lens thickness is uniform throughout.
Explanation

Answer: B - Plus lenses are thickest at the optic center.

With a plus lens, the edge toward the direction of decentration, typically the nasal edge, becomes thicker. Plus lenses are thickest at the optical center towards the bridge.

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