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How does light travel through the retina and explain how light is focused for distant and close vision?
Wiki User
∙ 12y ago
light is focused onto the retina, which is made up of light sensitive cells called rods and cones. THey detect this incident light energy and then convert it into signals, which are sent to the brain. In order to focus on near or far objects, the lens in our eyes is suspended my ciliary muscles. when we focus on something far away, they pull the lens flat as the light has more time to bend, do doesn't need to be bent as much. Therefore, with objects upclose, the muscles cause the lens to relax and become fatter, bending the light drastically to focus the image
Wiki User
∙ 12y ago
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What would happen if a laser burned your retina?
If a LASER device burned you retina, you would mostly or completely blind in that eye. There would most likely be no way to repair the damage. Keep in mind that LASER beams can cut through steel !
Use retina in a sentence?
The retina had been ruptured causing the loss of vision
What does the word retina mean in science?
Retina is a part of eye where images of objects are formed.
Why do people someimes have red eyes is pictures?
The "red " in the eyes of some people is from a camera with a FLASH. In the flash the person is in a dark setting so this makes their iris dilate letting in light from the flash. In the back of the human eye is a blood rich retina that turns focused light that hits it and turns the light into electrical signals that travels through optic nerve to the brain. The brain then turns these electrical signals into a arrangement (digital) that our brain understands as a image. I digress; the "red" eyes in the photo is due to the flash hitting the retina and is reflected back to the lens of the camera
What makes the human eye see in the dark?
Inside the Retina the retina has two things that help the eye see in the dark and have colors. The one that can see in the dark is cone cells Inside the Retina the retina has two things that help the eye see in the dark and have colors. The one that can see in the dark is cone cells
If images of distant objects are typically focused at a point in front of the retina?
The person will be nearsighted.
Where is the light focused when it enters your eye?
The retina
Where is the image in the eye focused onto?
The most neuron focused point in the eye is the fovea centralis or more simply, fovea. This is the are most responsible for sharp central vision. About 50% of the optic nerve endings are from the brina to this area in the eye.
Where in the retina is the light focused in farsightedness?
Before the retina; in the vitreous humor.
What happens if the light is focused behind or in front of the retina?
You will need glasses. If its focused in front of your retina then you're near-sighted (can't see close up). If its focused behind your retina then you're far-sighted (can't see far away)
What is the region in the center of the retina?
The center region of the retina is called the macula. this is where images are focused.
Parts through which light passes as it enters the eye?
As light enters the eye, it passes through the cornea and the lens and is eventually focused onto the retina.
What part of the eye focuses the light that comes through the eye?
The answer to this question is the retina .......... It's the retina because everything is upside down, bends, goes up to the brain and flips it around........and that is why the light is always focused on the retina
What part of the eye is like a film on a camera?
The retina is very similar to the film in a camera. Images come through the eye's lens and are focused on the retina. The retina then converts these images to electric signals and sends them by way of the optic nerve to the back lobe of the brain.
What part of the eye is like a film of a camera?
The retina is very similar to the film in a camera. Images come through the eye's lens and are focused on the retina. The retina then converts these images to electric signals and sends them by way of the optic nerve to the back lobe of the brain.
What part of the ey is like the film on a camera?
The retina is very similar to the film in a camera. Images come through the eye's lens and are focused on the retina. The retina then converts these images to electric signals and sends them by way of the optic nerve to the back lobe of the brain.
What causes myopia and hyperopia?
Nearsightedness and farsightedness are caused by light falling somewhere other than directly on the retina. Normally, light enters the eye through the lens and shines directly on the back of the eye called the retina. This is important because the retina is where all the receptors are, and they convert the light into nerve signals that are sent to the brain. In nearsightedness, light comes through the eye and lands in front of the retina, causing images far away to appear blurred. This can be caused by a curvature in the cornea or lens that is misdirecting the light, or by the shape of the eye itself. If the eye is longer than normal, light may fall in front of the retina. In farsightedness, light falls behind the retina, so that images close up appear blurred.This can also be caused either by the curvature of the lens or cornea, or by the shape of the eye. In the case of farsightedness, the eye may be shorter than normal.
