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Why aren't there blood vessels in your sight if there are blood vessels on the retina?
Wiki User
∙ 13y ago
This is because of a phenomenon that prevents our brains from processing what is referred to as a stabilized image. Sense the blood vessels on the retina are in a fixed position and move with the retina as the eye moves our brains can in affect remove the shadows from our vision without us ever being aware of them because the position of the vessels in our field of vision never changes.
In the event of a retinal hemorrhage for example where a vessel may expand or burst, this would create vision problems as the event would create a new or changing obstruction on the retina that the brain would be able to detect.
Wiki User
∙ 13y ago
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What is the part of the eye that allows sight?
The Retina.
Can the eye sight be damage because of retina condition?
Yes, the retina is a pivotal part of the eyes ability to see.
Where in the retina is the light focused nearsighted?
The retina is a light sensitive layer located at the back of the eye and is used by near and far sighted people.The lens of the eye controls how images are projected onto the retina and this is what causes sight problems such as near and far sight.
Can poor eye sight get better without surgery?
Glasses and contact lenses are very effective ways of correcting poor eyesight without surgery. However, it really depends on the cause of bad eyesight. Sometimes prescription medicines may be required. -------------------------------------------------------------------------- Yes with laser surgery as long as the retina-contains blood vessels is healthy and you are a candidate.
Where are the sensory cells located for sight?
receptors in the retina(inside back) of the eye
Can migrains kill?
A migraine is a constriction of blood vessels, which causes pain and loss of sight and etc. So no, any trauma to a person's head which kills them is not a migraine.
What contains visual receptors called rods and cones?
Rods and cones are in the sensory components in the retina of the eye. They are essential to the sense of sight.
Is there surgury for blind spots?
Yes, there is a procedure that uses a laser to "tack" a detached retina back onto the eye. That can restore sight in blind spots that result from a detached retina.
You sometimes appear in photographs with red eyes why?
You use a flash to take a photograph because there isn't enough light to take the picture without one. Because the room is fairly dim, the eyes of the subjects are dilated; the pupils are large, to let in lots of light. The light receptors on the retina of the eye are very well provided with capillaries, the tiny blood vessels that provide blood - and oxygen - to your eyes. (One of the symptoms of hypoxia, or lack of oxygen to the brain, is your sight starting to fade.) When you take a flash photo, especially if the flash is built into the camera, the light from the flash goes into the eye, and hits the retina. Because the retina is mostly red blood vessels, the red light is reflected while the other colors are absorbed. So the red light bounces off the retina of your subjects' eyes, and back to your camera. Presto! Red eyes! You can reduce the "red eye" effect by having the flash several inches away from the camera lens. The red will still be reflected, but it won't be reflected straight back at the camera; the reflection will bounce out to someplace away from the camera, and it won't be as noticeable.
What scientist 1st determined that human sight results from images are directetly projected to the retina?
Johannes kepler
What is the word for someone who loves the sight of blood?
The term for someone who loves the sight of blood is "hematolagnia."
What is the meaning of ' sight to stir blood'?
Something that affects a viewer with strong emotions is said to be a 'a sight to stir blood'
