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Topic starter
Light enters the eye through an opening in the
(A) lens.
(B) retina.
(C) iris.
(D) blind spot.
(E) fovea.
Spoiler
Answer
(C) iris.
Spoiler
Explanation
Light enters the eye through an opening in the iris. The iris, the colored part of the eye, is a muscle that controls the size of the pupil, the hole through which light enters the eye. After passing through the pupil, the light is refracted by the lens and ultimately lands on the retina at the back of the eye. The blind spot is the part of the retina where the axons of the ganglion cells exit the eye en route to the brain; it is known as the blind spot because there are no photoreceptors there. The fovea is the part of the retina in which you have highest visual acuity due to the lack of summation there.
Posted : 07/04/2024 5:48 am