Vision
In short
Vision is the ability of an organism to interpret light to make sense of its surroundings. It is one of the primary senses used by humans and animals to navigate the world.
In plain words
Your eyes catch light and send signals to your brain. Your brain then turns those signals into pictures. This helps you see shapes, colours, and movement.
A simple example
When you walk into a dark room, your eyes struggle to see until they adjust to the small amount of light available. This allows you to find the light switch without tripping.
Why it matters
It allows living things to find food, avoid danger, and communicate with others. Without it, many species would struggle to survive in complex environments.
Easy to mix up
Do not confuse vision with sight; vision involves the brain processing information, while sight is the physical act of light hitting the eye.