Visual Perception is the ability to interpret information from the effects of visible light reaching the eye. The resulting perception is also known as eyesight, sight, or vision. We see images as a whole rather than in parts. However, images can be broken down into their visual elements: line, shape, texture, and color. These elements are to images as grammar is to language. Together these elements allow our eyes to see full images and our brain to recognize them.
Example: You walk down a street looking at a bus on the street. As you approach the bus, its image on the retina of your eye gets larger and larger. Certain proportions change also. Yet, your brain does not interpret these changes as real changes in the bus itself. It continues to "see" the bus as the same object no matter how close or how far you are from it.