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The optic nerve contains axons of nerve cells that emerge from the retina, leave the eye at the optic disc, and go to the visual cortex where input from the eye is processed into vision. There are 1.2 million optic nerve fibers that derive from the retinal ganglion cells of the inner retina. [2] Damage to the optic nerve can have different causes:
It presents with visual loss and signs of optic nerve dysfunction, such as loss of color vision, afferent pupil defect, and sometimes abnormalities of the optic disc. The clinical features of AON can be variable and present in several unilateral or bilateral forms: Acute anterior or retrobulbar optic neuritis sometimes associated with pain.
Bilateral severe visual loss (simultaneous or sequential) usually occurs, but there are reports of unilateral visual loss. [3] Patients can have an associated relative afferent pupillary defect. [5] CRION is associated with at least one relapse, and up to 18 relapses have been reported in an individual. [6]
The good news was that doctors knew almost instantly what was wrong with me (optic neuritis, or inflammation of the optic nerve) and how to treat it (five days of intravenous steroids).
The American study found that Ozempic more than doubles the risk of non-arteritic anterior ischemic optic neuropathy (NAION), a rare condition that damages the optic nerve.
Optic nerve hypoplasia is the underdevelopment of the optic nerve resulting in little to no vision in the affected eye. Tumors, especially those of the pituitary gland, can put pressure on the optic nerve causing various forms of visual loss. Similarly, cerebral aneurysms, a swelling of blood vessel(s), can also affect the nerve. Trauma can ...
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