eye

Also known as eyes, eyeball, 👀, 👁👁, eyeballs

An eye is a sensory organ that allows an organism to perceive visual information. It detects light and converts it into electro-chemical impulses in neurons (neurones). It is part of an organism's visual system.

AI overview

An eye is a sensory organ that detects light and converts it into signals that your brain can understand, allowing you to see the world around you. Eyes matter because they're a crucial part of how most animals gather information about their environment and navigate through life.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Anatomy.Name: Eye
Anatomy.Latin: oculus
Anatomy.Greek: ὀφθαλμός (ophthalmós)
Anatomy.System: Nervous
Anatomy.Image: Krilleyekils.jpg
Anatomy.Caption: Compound eye of an Antarctic krill
Anatomy.Image2: Schematic diagram of the human eye en.svg
Anatomy.Caption2: Diagram of a human eye

via Wikipedia infobox

~37 min read

Encyclopedic overview

29 sections

Contents

Overview
Types
Non-compound eyes
Pit eyes
Spherical lens eye
Multiple lenses
Refractive cornea
Reflector eyes
Compound eyes
Apposition eyes
Superposition eyes
Parabolic superposition
Other
Nutrients
Evolution
Relationship to life requirements
Physiology
Visual acuity
Colour perception
Rods and cones
Pigmentation
Additional images
See also
Notes
References
Citations
Bibliography
Further reading
External links

In higher organisms, the eye is a complex optical system that collects light from the surrounding environment, regulates its intensity through a diaphragm, focuses it through an adjustable assembly of lenses to form an image, converts this image into a set of electrical signals, and transmits these signals to the brain through neural pathways that connect the eye via the optic nerve to the visual cortex and other areas of the brain.

Excerpted from Wikipedia’s “eye” article, available under the CC BY-SA 4.0 licence.