Multiple choice

Short sightedness is due to

  1. Shifting of the iris

  2. Weaker muscles

  3. Elongation of eye balls

  4. Weakening of the retina
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Short-sightedness (myopia) occurs when the eyeball is elongated (too long) or the cornea is too curved. This causes light to focus in front of the retina instead of on it. The iris controls pupil size, muscles control lens shape, and the retina is the light-sensing layer - none are the primary cause of myopia.

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