The blind spot of the eye is the region where
- A. the optic nerve leaves the retina and no photoreceptors are present
- B. the lens focuses light most sharply
- C. the iris meets the cornea
- D. rods are most densely packed
Explanation
At the optic disc the axons of ganglion cells gather to form the optic nerve, leaving no space for rods or cones, so light falling there is not seen. The point of sharpest vision is the opposite, the fovea.
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