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Question
Which of the following alternatives regarding a blind spot is/are correct?
Which of the following alternatives regarding a blind spot is/are correct?
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Solution
The correct options are
A Has no sensory cells
B No vision possible at that spot
C Present in the retina
The lens focuses light on a layer called retina. Retina has sensory cells that reponds to the incoming light. Optic nerves originate from the retina and carries nerve impulse to the brain for interpretation. At the junction of the optic nerve and the retina, there are no sensory cells, so no vision is possible at that spot. This is called the blind spot.
A Has no sensory cells
B No vision possible at that spot
C Present in the retina
The lens focuses light on a layer called retina. Retina has sensory cells that reponds to the incoming light. Optic nerves originate from the retina and carries nerve impulse to the brain for interpretation. At the junction of the optic nerve and the retina, there are no sensory cells, so no vision is possible at that spot. This is called the blind spot.
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