Essays Tagged: "Cone cell"
The Function of the Human Eye.
becomes almost perfectly round.The human retina contains about 125 million rod cells and 6 million cone cells, two types of photoreceptors named for their shapes. They account for 70% of all sensory ... the importance of the eyes and visual information in how humans perceive their environment.Rods and cones have different functions in vision. Rods are more sensitive to light but do not distinguish co ...
Subjects: Science Essays > Biology > Human Biology
Visual Impairment
k of our eye.The retina at the back of the eye is a light-sensitive layer which consists of rod and cone cells. These cells collect the light signals directed onto them and send them as electrical sig ... ing us from bumping into things. They also enable us to see things in dim light and to see movement.Cone cells are concentrated in the centre of our retina where the light is focused by the cornea and ...
Subjects: Humanities Essays > Health & Medicine
Color blindness
brain. This conversion is accomplished by two types of receptor cells in the retina called rods and cones do to their shape. The cones are responsible for converting the color. Each cone contains visu ... re responsible for encoding white and black. Color blindness results when one or more of the cone cells fail to function properly. One of the visual pigments may be functioning abnormally, or b ...
Subjects: Humanities Essays > Health & Medicine > Diseases