What is the job of the retina?

Answer 1

The retina receives the image seen through your eye, only in reverse up to down. It transmits this image through the optical nerve and your brain returns the inverted image to its correct right side up.

The retina does basic optical processing, such as edge detection/enhancement and colour separation.

The retinal image is considerably distorted - it's formed over the inside of an imperfect sphere. The brain does major processing to correct geometric errors. It also preserves "uprightness" - if you tilt your head, you *should* see the world tilt as well.

The retina has a highly-sensitive fovea, responsible for fine vision, with the majority of the retina giving coarse detail.
The retina in a human eye turns the light or whatever it is that we see into something we an understand and it passes it on to our optic nerve, which sends it to our brain for us to react.
The vertebrate retina is a light sensitive tissue lining the inner surface of the eye. The optics of the eye create an image of the visual world on the retina, which serves much the same function as the film in a camera. Light striking the retina initiates a cascade of chemical and electrical events that ultimately trigger nerve impulses. These are sent to various visual centers of the brain through the fibers of the optic nerve. In vertebrate embryonic development, the retina and the optic nerve originate as outgrowths of the developing brain, so the retina is considered part of the central nervous system (CNS).[1]. It is the only part of the CNS that can be imaged directly. The retina is a complex, layered structure with several layers of neurons interconnected by synapses. The only neurons that are directly sensitive to light are the photoreceptor cells. These are mainly of two types: the rods and cones. Rods function mainly in dim light, while cones support daytime vision. A third, much rarer type of photoreceptor, the photosensitive ganglion cell, is important for reflexive responses to bright daylight. Neural signals from the rods and cones undergo complex processing by other neurons of the retina. The output takes the form of action potentials in retinal ganglion cells whose axons form the optic nerve. Several important features of visual perception can be traced to the retinal encoding and processing of light. ---- Found on www.wikipedia.org
The retina converts light into electrical signals which are sent to the brain via the optic nerve.
make you able to hold for breath for longer than 7 seconds
The retina receives the image seen through your eye, only in reverse up to down. It transmits this image through the optical nerve and your brain returns the inverted image to its correct right side up.

The retina does basic optical processing, such as edge enhancement and colour separation.
The retina is the photo receptive sensory layer of the back of the eye, where the optics of the eye focuses an image of what is in front of the eye. The optic nerve carries signals from the retina to the brain, which interprets them as visual images.

The retina has two types of cells the rods and cones. The cones are responsible for colour vision while the rods provide black and white and night vision.

Changes the liight rays iinto neural iimpulses
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The retina is responsible for collecting light to create an image

Answer 2

The retina is the photo receptive sensory layer of the back of the eye (that covers about 65 percent of its interior surface), where the optics of the eye focuses an image of what is in front of the eye. The optic nerve carries signals from the retina to the brain, which interprets them as visual images.

The retina has two types of cells the rods and cones. The cones are responsible for color vision while the rods provide black and white and night vision.

Answer 3

The retina is the light sensitive part of the eye. This is the top layer of the back of the eye which is hit by light and where photoreceptors (rods and cones) are activated, sending signals down the optic nerve to the brain.

Answer 4

retina is just like screen on which the image is obtained inverted after passing through the convex lens known as pupil . this inverted image is then transferred to brain through nerves.. in this way retina helps us to see.

Answer 5

Retina nerves send messages to your brain; to tell what you are seeing.

Answer 6

It allows a clear picture of what your seeing to be passing through into your brain so we can see properly

Answer 7

make you able to hold for breath for longer than 7 seconds

Answer 8

the retina contains millions of photoreceptors that capture light rays and convert them into electrical impulses.

Answer 9

The retina is the back part of the eye. The cells in the retina, called photoreceptors, respond to light. There are two types of photoreceptors which are the rods and the cones.

Answer 10

The retina is a light-sensitive layer at the back of the eye that covers about 65 percent of its interior surface