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A person may suffer from both myopia and...

A person may suffer from both myopia and hypermetropia defects. (a) What is this condition called? (b) When does it happen? (c) Name the type of lens often required by the persons suffering from this defect. Draw labelled diagram of such lenses.

A

Concave

B

Convex

C

Bifocal

D

Biconvex

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • A person suffering from 'presbyopia' (myopia and hyper metropia both defects) should use

    A
    A concave lens
    B
    A convex lens
    C
    A bifocal lens whose lower portion is convex
    D
    A bifocal lens whose upper portion is convex

  • A person suffering from hypermetropia requires which type of spectacle lenses ?

    A
    Concave lens
    B
    Plano-concave lens
    C
    Convexo`-` concave lens
    D
    Convex lens

  • A person is suffering from the defect astigmatism. Its main reason is

    A
    Distance of the eye lens from retina is increased
    B
    Distance of the eye lens from retina is decreased
    C
    The cornea is not spherical
    D
    Power of accommodation of the eye is decreased

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    What happens when a person is suffering from myopia?

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