ELEMENTS OF VISUAL PERCEPTION

The diameter of the human eye ranges from 20 to 25 mm on average, making it a somewhat asymmetrical spherical. Its volume is around 6.5cc. The eye and a camera are identical. When the camera takes a picture of any thing, the outside object is seen. The pupil, a tiny hole that appears black and has the ability to contract the eye in response to intense light, allows light to enter the eye and is focused on the retina, which functions similarly to film in a camera.The diameter of the human eye ranges from 20 to 25 mm on average, making it a somewhat asymmetrical spherical. Its volume is around 6.5cc. The eye and a camera are identical. When the camera takes a picture of any thing, the outside object is seen. The pupil, a tiny hole that appears black and has the ability to contract the eye in response to intense light, allows light to enter the eye and is focused on the retina, which functions similarly to film in a camera.Cones in eye number between 6 to 7 million which are highly sensitive to colors. Human visualizes the colored image in daylight due to these cones. The cone vision is also called as photopic or bright-light vision.?