optic nerve block

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What could block the optic nerve ?

Many causes

Multiple_sclerosis
The optic nerve can be affected by trauma, infection, vascular occlusion, tumors in the optic canal or on the pituitary, or inflammatory processes like multiple sclerosis. If there is a sudden change in the vision, which is a hallmark of optic nerve dysfunction, see your ophthalmologist right away.
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What is the optic nerve?

Optic nerve

Optic_neuritis
The optic nerve is at the back of the eyeball and transmits visual information from the eye to the brain.
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Explain the optic nerve?

The electrical cable of the eye

Optic_neuritis
The optic nerve is the eye's electrical cable. Each optic nerve is comprised over one million neurons. The neurons bring visual information that falls on the retina through the optic chiasm and lateral genicular bodies, through the optic radiations and then into the occipital lobe, the farthest back part of the brain, and then the signals travel to the associative cortices, where they are processed and ultimately interpreted in our consciousness as vision.
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Dr. Young H. Choi answered:

Function of the optic nerve?

Optic nerve

Nerve
The optic nerve carries the signal from the retina to the brain.
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optic nerve damage in the eye?

Optic nerves

Nerve_injury
A thorough exam can help determine the extent of the damage in many cases along with visual field and OCT testing. A neuroophthalmic exam may be required in addition to an MRI or CT scan in some cases.
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optic nerve damage reversible?

Depends

Central_nervous_system
on time, severity, etc. specifically depends if the neurons have died (not recoverable at this time since an extension of the central nervous system) or are just in "distress" and could recover when the inflammation or inciting factor is resolved. typically, not reversible to normal.
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Dr. Harold Peltan answered:

Can optic nerve be seen on ct?

Yes

Head_ct
Optic nerve can be seen on CT, especially with contrast. Depending on the space between the imaging sections, one may see only part of the optic nerve. MRI can be a better imaging study of the nerve, which is soft tissue. CT is better for examining bony structures.
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What's an elevated optic nerve?

Nerve swelling

Optic_neuritis
Elevated optic nerve means one which which protrudes from the optic disc in back of the eye. This may developmental, or related to eye shape, or to swelling of optic nerve. Ask your ophthalmologist to explain these possibilities to you--it's part of his/her responsibility--i.e., education, instead of baffling you with medicalese
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is optic nerve damage reversible?

Usually it is not.

Nerve_injury
Optic nerve damage can occur from a variety of causes, including trauma, inflammation like temporal arteritis, glaucoma, congenital, metabolic ,tumor, and vascular causes such as sudden loss of blood (ischemic optic neuropathy).Rarely is optic nerve damage reversible.It is very important to see your eye MD to determine precise cause of the damage and protect that eye and the other eye from damage
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Is there an optic nerve transplant?

Not at this time

Transplant
It is not yet possible to transplant the optic nerve or eye. Research was done in the 1990s in this area, but there have been no positive results to date. It doesn't appear that this will be possible in the near future, either.
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