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Why do some people use bifocal lenses ?...

Why do some people use bifocal lenses ?

Text Solution

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Some people suffer from both, myopia and hypermetropia. They require bifocal lenses.
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Knowledge Check

  • The polymer used for optical lenses is

    A
    polypropylene
    B
    polyvinyl chloride
    C
    polythene
    D
    polymethyl methacrylate

  • A lady is prescribed bifocal lenses. She is suffering from

    A
    nearsightedness only
    B
    farsightedness only
    C
    both hypermetropia and hyperopia
    D
    both nearsightedness and farsightedness

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