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THE EYES HAVE ITTHE EYES HAVE IT
VISUAL BASICS

What is Vision?
Simple Eyes
The Brain and Eye
The Single-Lens Eye
Anatomy of a Single-Lens Eye
The Compound Eye
Anatomy of a Compound Eye

The Eyes Have It

What is Vision?

CollageAn animal depends on its senses to survive in its environment. An important sense is vision, or sight, which is the sense that detects light. Light can indicate many things an animal needs to know to survive. It can indicate the time of day, the time of year, or the presence of heat. It can indicate the presence of prey, predators, or mates (see Bioluminesence).

An animal senses light with its eyes. Eyes can be simple light-sensitive cells that don't see images, or complex organs that see light, shadow, color, shape, and depth.

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The Eyes Have It | Kids' Habitat

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