2 (a) The Visual System

rOur brain controls our 5 senses. On of the 5 senses it controls is the visual system. Many parts of the visual system have different important parts in helping us see and perceive our surroundings. 2 main parts of our eyes are the cornea and the lens. Both the cornea and the leans help our visual system adjust the focus of our eyes. The back of our eyes feature the retina of our eyes. The retina is layered by photoreceptors.  The photoreceptors gain information by absorbed light. There are 3 colors of photoreceptors ( Green , Blue and Red). These colors used in combination helps us put together a full image. The fovea  ( a part of the retina) contains only red and green photoreceptors. The macula is the area around the fovea on the retina. The macula helps in driving and reading. The brain is connected to the eyes by the Optic Nerve. The optic nerve carries visual information in form of an electrical signal to the visual cortex as well as other parts of the brain where it is processed and developed. The brain then visualizes the final image. Our visual system uses a binocular vision. This means that the brain takes 2 images and connects them into one image.  All images received by the visual system is inverted. But the brain flips the image back to its correct form. ​