Lenses quiz

Told you there would be a quiz!

Lenses quiz

  1. What are the 3 types of multi- focal lenses?
  2. What is a no line multi-focal lens?
  3. Conventional lenses have a front surface that is spherical, meaning?
  4. What does it mean to have hi-index lenses
  5. Why are polycarbonate lens a good choice for children?

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