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Eye anatomy

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Eye anatomy

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User GeneratedUser

Wrejva17Subject

Health Medical

Description

Explain the mechanisms by which the iris controls the size of the pupil and regulates the amount of light entering the eye, and describe how the pigmentation of the iris determines eye color.Detail the functions of the ciliary body in producing aqueous humor and adjusting the shape of the lens for accommodation, and explain the process of accommodation in focusing on near or distant objects.Discuss the role of the choroid in the eye, including its vascular supply to the retina and its function in absorbing excess light to prevent scattering, thereby maintaining clear vision.Explain the structure and function of the retina, including the roles of photoreceptor cells (rods and cones) in detecting light and converting it into electrical signals, and how these signals are transmitted to the brain via the optic nerve.Describe the differences between rods and cones in the retina, including their respective roles in sensitivity to low light levels and color vision, and their contribution to visual acuity.

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