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प्रश्न
Name the common defects of the eye.
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उत्तर
Common defects of the eye:
(i) Near or short-sightedness (Myopia)
(ii) Far or long-sightedness (Hypermetropia)
(iii) Astigmatism.
(iv) Presbyopia.
(v) Night blindness.
(vi) Colour blindness.
(vii) Squint.
(viii) Cataract.
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The photosensitive pigment present in the rod cells of the retina.
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Hypermetropia is a defect of the eye caused due to the eyeball elongation
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