العين

The eye is an organ of the visual system. They provide animals with vision and the ability to receive and process visual details, as well as enable many vision-independent image response functions. The eyes detect light and convert it into chemical electrical impulses in nerve cells. In higher organisms, the eye is a complex optical system that collects light from the surrounding environment, regulates its intensity through a membrane, focuses it through adjustable assembly of lenses to form an image, converts this image into a set of electrical signals, and transmits these signals to the brain through pathways A complex nerve that connects the eye via the optic nerve to the visual cortex and other areas of the brain. Analytical eyes come in ten fundamentally different shapes, and 96% of animal species possess a complex visual system.