Definition of visual perception

Perception (from latin perceptĭo) is to receive through the senses, images, sounds, impressions or external sensations. It's a psychic function that allows the body to capture, develop and interpret information from the environment. It is important to distinguish the stimuli, which belong to the outside world and generate the first effect in the chain of knowledge and perception, which is a psychological process that is part of the inner world. It is worth mentioning that the stimuli are the physical, mechanical, thermal, chemical or electromagnetic energy that excites or activates a sensory receptor.
Visual perception is all inner sensation of apparent knowledge, resulting from stimuli or a captured light print (s) through the eyes (sight). In general, this optical and physical act works more or less like that for all people, because the Visual organs physiological differences affect only the result of the perception.
The main differences have to do with the interpretation of perceived information, because of the differences concerning culture, education, intelligence and age, for example. In this sense, the images can 'read' or interpret as a literary text, and so there in the operation of visual perception the possibility of learning to deepen the meaning of reading.
Psychologists of the Gestalt, at the beginning of the 20th century, were the first to propose a philosophical theory of the form. Max Wertheimer, Kurt Koffka and Wolfgang Köhler, Kurt Lewin, of among other things, ensure that all perception, is different from the sum of its parts.