Human Eye || Structure and function of Eye || Parts of the Eye || Telugu

Описание: The Human Eye and Vision
The main parts of the human eye are the cornea, iris, pupil, aqueous humor, lens, vitreous humor, retina, and optic nerve.
Light enters the eye by passing through the transparent cornea. The iris controls the size of the pupil, which is the opening that allows light to enter the lens. Light is focused by the lens and goes through the vitreous humor to the retina. Rods and cones in the retina translate the light into an electrical signal that travels from the optic nerve to the brain.

Eye Structure and Function

Cornea:
Light enters through the cornea, the transparent outer covering of the eye. The eyeball is rounded, so the cornea acts as a lens. It bends or refracts light.

Iris and Pupil:
Light passes through the cornea and aqueous humor through an opening called the pupil. The size of the pupil is determined by the iris, the contractile ring that is associated with eye color. As the pupil dilates (gets bigger), more light enters the eye.

Lens:
While most of the focusing of light is done by the cornea, the lens allows the eye to focus on either near or distant objects. Ciliary muscles surround the lens, relaxing to flatten it to image distant objects and contracting to thicken the lens to image close-up objects.

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