Practice Quiz

ABO NOCE Basic Opticianry

Category - Ophthalmic Optics

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Which would be the best solution for people who want to see up close at the top of their lens and at the bottom of their lens?
  1. Use a press-on bifocal seg
  2. Order a trifocal lens
  3. Order a double d lens
Explanation
Answer: C -For people who want to see up close at the top of their lens and the bottom, the best solution would be to get a double d lens.

Although this lens only comes in limited material, a bifocal seg can be ground at the top and bottom of the lens, allowing the patient to use their glasses to see up close at the top of the lens and at the bottom with distance in the middle.
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