In humans, vision is the most developed sense: an important part of the cortex brain is used to process visual information. It works as follows: the photoreceptors present on the retina (the cones and the sticks) capture the characteristics of the light and transmit the information to brain. The visible part of theeye is only a fraction of this sensory organ: most of it is actually inside. Discover theanatomy of the eye in pictures.
.
fs7