33)(a) What is Cataract? How can it be corrected? (b) Name the spot in the eye where no vision is possible. Why? (c) Where is this spot present in the eye?
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the eye lens becoming white and milky is known as cataract.it can be corrected by cataract operation.vision is not possible at the bling spot because there are no photoreceptors present.I t is located on the top os the optic nerve
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A.Cataract is caused mostly to aged people necause their eyes get cloudy and husky due to its exposure to environmental pollutants.in cataract the vision of the person becoes blur.it can be corrected by a surgery it should be cured as soon as posible.in the surgery the dotor replaces the old lens with the new lens
B.blind spot.because it is sensitive to light and thus the image formed on this spot is not seen.
C.it is present on retina
B.blind spot.because it is sensitive to light and thus the image formed on this spot is not seen.
C.it is present on retina
cgeg:
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