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Which one does not belong in the grouping choroid sclera vitreous humor or retina?
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∙ 13y ago
vitreous humor
Wiki User
∙ 13y ago
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What is hypermyopia?
Extreme short sightedness Hypermyopia is Retinal Detachment The retina is attached to the sclera in the back of the eye, and a retinal detachment occurs when it is pulled away from this normal position. The retina, like film in a camera, is responsible for creating the images that one sees. A good picture could not be produced if the film were not in its correct location within the camera, and we lose vision if the retina is not in its proper place within the eye. The retina detaches by separating from the back wall of the eye. When it is removed from its blood supply (the choroid), it will lose nourishment and result in a loss of some vision if not repaired in time. This retinal tear may be caused by trauma or by a vitreous detachment (or "posterior vitreous detachment"). Vitreous detachment, not uncommon in older people, results from the vitreous fluid shrinking and pulling away from the retina. This causes "floaters," which do not damage the retina or vision. Extreme short sightedness Hypermyopia is Retinal Detachment The retina is attached to the sclera in the back of the eye, and a retinal detachment occurs when it is pulled away from this normal position. The retina, like film in a camera, is responsible for creating the images that one sees. A good picture could not be produced if the film were not in its correct location within the camera, and we lose vision if the retina is not in its proper place within the eye. The retina detaches by separating from the back wall of the eye. When it is removed from its blood supply (the choroid), it will lose nourishment and result in a loss of some vision if not repaired in time. This retinal tear may be caused by trauma or by a vitreous detachment (or "posterior vitreous detachment"). Vitreous detachment, not uncommon in older people, results from the vitreous fluid shrinking and pulling away from the retina. This causes "floaters," which do not damage the retina or vision.
What is the vascular middle layer of the eye that provides the eye with blood called?
This is the middle layer of the eyeball and it is composed of the choroid, ciliary body and iris.
Where in the retina is the light focused in farsightedness?
Before the retina; in the vitreous humor.
What is the clear gelatinous substance that fills the eyeball between the lens and the retina?
it is the cornea
What does the choroid of the eye do?
The choroid is a layer of the eye deep to the retina and superficial to the sclera. It provides oxygen and nutrients to the retina through its extensive network of capillaries. The retina itself does not have a huge vascular supply, because the vessels would interfere with the formation of the image in the eye. This is why the choroid is necessary. The choroid is also very heavily pigmented due to an abundance of melanin. This increased pigment allows the choroid to absorb excess light and minimize reflections within the eye. The choroid along with the iris and ciliary body make up what is known as the uveal tract.
What is hypermyopia?
Extreme short sightedness Hypermyopia is Retinal Detachment The retina is attached to the sclera in the back of the eye, and a retinal detachment occurs when it is pulled away from this normal position. The retina, like film in a camera, is responsible for creating the images that one sees. A good picture could not be produced if the film were not in its correct location within the camera, and we lose vision if the retina is not in its proper place within the eye. The retina detaches by separating from the back wall of the eye. When it is removed from its blood supply (the choroid), it will lose nourishment and result in a loss of some vision if not repaired in time. This retinal tear may be caused by trauma or by a vitreous detachment (or "posterior vitreous detachment"). Vitreous detachment, not uncommon in older people, results from the vitreous fluid shrinking and pulling away from the retina. This causes "floaters," which do not damage the retina or vision. Extreme short sightedness Hypermyopia is Retinal Detachment The retina is attached to the sclera in the back of the eye, and a retinal detachment occurs when it is pulled away from this normal position. The retina, like film in a camera, is responsible for creating the images that one sees. A good picture could not be produced if the film were not in its correct location within the camera, and we lose vision if the retina is not in its proper place within the eye. The retina detaches by separating from the back wall of the eye. When it is removed from its blood supply (the choroid), it will lose nourishment and result in a loss of some vision if not repaired in time. This retinal tear may be caused by trauma or by a vitreous detachment (or "posterior vitreous detachment"). Vitreous detachment, not uncommon in older people, results from the vitreous fluid shrinking and pulling away from the retina. This causes "floaters," which do not damage the retina or vision.
What is the vascular middle layer of the eye that provides the eye with blood called?
This is the middle layer of the eyeball and it is composed of the choroid, ciliary body and iris.
Where in the retina is the light focused in farsightedness?
Before the retina; in the vitreous humor.
What does the Vitreous Humor do in the human eye?
The vitreous humor helps keep the retina in place
What is the clear gelatinous substance that fills the eyeball between the lens and the retina?
it is the cornea
What does the choroid of the eye do?
The choroid is a layer of the eye deep to the retina and superficial to the sclera. It provides oxygen and nutrients to the retina through its extensive network of capillaries. The retina itself does not have a huge vascular supply, because the vessels would interfere with the formation of the image in the eye. This is why the choroid is necessary. The choroid is also very heavily pigmented due to an abundance of melanin. This increased pigment allows the choroid to absorb excess light and minimize reflections within the eye. The choroid along with the iris and ciliary body make up what is known as the uveal tract.
What is the Vitreous Jelly?
The "Vitreous Jelly" or what you may mean, the vitreous humor, is clear gel (which I assume can be likened to glass), that is between the retina and lens of the human eye.
What part of the eye is right below the lens?
That depends on what you are referring to when you say below. If you mean below it to hold it in place in your eye then that is the ciliary body, which is between the iris and the choroid. If you mean behind the lens between it and the retina this is called the vitreous body. The vitreous body contains clear jelly like substance called the vitreous humor. Below is a link to All About Vision's anatomy of the eye resources page for more information.
Which substance helps to stabilize the eye and give physical support to the retina?
The vitreous humor
Identify the concentric layers of the eyeball that are its primary structures?
Sclera, choroid, and the retina.
What is the middle tunic of the eye and it has rich supply of blood and nourishes the retina?
choroid
What is the procedure to repair a detached retina?
The vitreous is a gel-like fluid which fills most of the eye. As people age, this vitreous becomes more and more liquefied. The vitreous has loose attachments to the retina, and more firm attachments to the optic nerve. At some point in a person's life, the vitreous liquefies enough to shift position in the eye. When this occurs, usually between age 50 and 70, the back edge of the vitreous will pull forward away from the retina, leading to a "vitreous detachment". This is generally a normal process, although it may happen abnormally early in cases of high nearsightedness or trauma. As the vitreous detaches, it tugs on the retina. This is perceived as a flash of light, similar to a lightning flash in the corner of the vision. It may occur especially with eye movement, since the vitreous moves in the eye. Debris pulled off of the optic nerve and retina are then seen as floaters, suspended in the vitreous above the retina. Sometimes this is described as a cobweb, a net, a string, or a fly over the vision.
