ABO NOCE Basic Opticianry

Category - Ophthalmic Optics

Which of these is not considered a multifocal lens?
  1. Trifocal
  2. Executive
  3. Double D
  4. FT 45
  5. None of the above
Explanation
Answer: E - These are all considered multifocals lenses.

While some of these multifocals are rarely used, they are not common anymore and are all considered to be multifocals.
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