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Question
Name the common defects of the eye.
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Solution
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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About 45 lac people in the developing countries are suffering from corneal blindness. About 30 lac children below the age of 12 years suffering from this defect can be cured by replacing the defective cornea with the cornea of a donated eye. How and why can students of your age involve themselves to create awareness about this fact among people?
What is the far point and near point of the human eye with normal vision?
What is the other name for
hypermetropia
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The photosensitive pigment present in the rod cells of the retina.
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The defect of the human eye caused due to the uneven surface of the cornea.
