The retina is responsible for converting light entering the eye into nerve impluses. The retina is very sensitive to light and lines the inside of the eye. It is occupied by approximately 127 million light receptors.
The retina consists of a total of six cell layers with different functions. The light-active sensory cells are the so-called cones and rods. While the cones are responsible for color vision, rods are responsible for light-dark perception.
Interestingly, however, the cones and rods are not located on the outside of the retina, but on the inner side, which faces away from the light. Thus, this so-called photoactive area is protected from overstimulation, since the light is first transmitted through the anterior retinal layers.
Anatomy of the human eye
Optic nerve (lat. Nervus opticus) in the eye
The optic nerve is responsible for ensuring that information from the retina reaches the brain. The concentrated bundle of millions of nerve fibers converts the light stimuli from the retina into impulses and sends them to ...
Inner eye shell
The inner shell forms the retina. It is used to receive light stimuli. The light impressions are transmitted to the brain via the optic nerve and processed there.
Blind spot (papilla)
The so-called blind spot is the point in the eye where the retina is interrupted and merges with the optic nerve. Since there are no light receptors at this point, ...