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HomeHomework HelpbiologyVision Structure and Function

Vision Structure and Function

Vision is the process by which the eye captures light through its structures, such as the cornea, lens, and retina, converting it into neural signals that are interpreted by the brain to form images. The eye's ability to focus light and detect variations in intensity and color enables the perception of the surrounding environment.

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Biology
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Overview

The human eye is a complex organ that allows us to perceive the world around us through vision. It consists of various parts, including the cornea, lens, retina, and optic nerve, each playing a crucial role in capturing and processing light. Understanding how these components work together helps us ...

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Key Terms

Cornea
The clear front part of the eye that helps focus light.

Example: The cornea is the first layer light passes through.

Lens
A transparent structure that further focuses light onto the retina.

Example: The lens changes shape to focus on near or far objects.

Retina
The layer at the back of the eye that contains photoreceptors.

Example: The retina converts light into electrical signals.

Pupil
The opening in the center of the iris that lets light in.

Example: The pupil dilates in low light conditions.

Iris
The colored part of the eye that controls the size of the pupil.

Example: The iris adjusts the pupil size based on light.

Photoreceptors
Cells in the retina that detect light.

Example: Rods and cones are types of photoreceptors.

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Key Concepts

Eye AnatomyLight ProcessingImage FormationVision Disorders