Diagram of Eye: Pictures, Images, Stock Photos

The human eye is a complex organ that enables vision by capturing light and converting it into electrical signals for the brain to interpret. Its structure includes the cornea, lens, retina, iris, and optic nerve, each playing a vital role in the process of sight. In this article, the human eye, external structures, and internal structures are discussed. The human eye is a topic of the chapter Neural Control and Coordination in Biology.

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This Story also Contains

1. Human Eye
2. External Structures
3. Internal Structures

Human Eye

An illustrative diagram of the eye is very basic in understanding its anatomy and features. In this way, one learns how the eye works in facilitating vision through the illustration.

External Structures

The extrinsic structures act to protect the eye and facilitate its function.

Eyelids

The eyelids protect the eye from debris and control the amount of light falling on the eye.

Conjunctiva

It is a thin membrane covering the front of the eye and lining the inner eyelids.

Diagram of Human Eye

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Internal Structures

The structures inside the eye complete the vision.

Cornea

The transparent, curved surface at the front of the eye refracts light.

Iris And Pupil

The iris controls the diameter of the pupil, which regulates the amount of light reaching the eye.

Lens

Flexible, transparent; focusing light onto the retina.

Retina

The inner one with photoreceptor cells which detect the light—rods and cones, which transmit it to the brain.

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