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The optic nerve is a bundle of millions of fibers in the retina that sends visual signals to the brain. Damage and death of these nerve cells, or neurons, leads to characteristic features of optic neuropathy. The main symptom is loss of vision, with colors appearing subtly washed out in the affected eye.
Diagnostic method. Eye examination. Functional visual loss (FVL) also known as Functional vision loss or Nonorganic visual loss (NOVL) is a reduction in visual acuity or loss of visual field that has no physiological or organic basis. This disease can come under the spectrum of functional neurological disorder or somatic symptom disorder.
Ophthalmology, rheumatology. Arteritic anterior ischemic optic neuropathy (arteritic AION, A-AION or AAION) is vision loss that occurs in giant cell arteritis (also known as temporal arteritis). Temporal arteritis is an inflammatory disease of medium-sized blood vessels that happens especially with advancing age.
Autoimmune retinopathy. Autoimmune retinopathy (AIR) is a rare disease in which the patient 's immune system attacks proteins in the retina, leading to loss of eyesight. The disease is poorly understood, but may be the result of cancer or cancer chemotherapy. [1] The disease is an autoimmune condition characterized by vision loss, blind spots ...
The following symptoms may indicate retinal disease, according to the National Eye Institute: Blindness. ... Sudden vision loss. If you don’t have an ophthalmologist, your primary care physician ...
Major symptoms are sudden loss of vision (partial or complete), sudden blurred or "foggy" vision, and; pain on movement of the affected eye. [4] [5] [2]Many patients with optic neuritis may lose some of their color vision in the affected eye (especially red), with colors appearing subtly washed out compared to the other eye.
While the macula is preserved there is some loss of pigmentation around it. Retinitis pigmentosa (RP) is a genetic disorder of the eyes that causes loss of vision. [1] Symptoms include trouble seeing at night and decreasing peripheral vision (side and upper or lower visual field). [1] As peripheral vision worsens, people may experience "tunnel ...
Chronic progressive vision loss that mimics a compressive lesion. The main features that differentiate AON from the more common typical demyelinating optic neuritis is the poor recovery of vision and the chronic or recurrent or bilateral course of AON. [2] Furthermore, the workup for multiple sclerosis including MRI, will be negative. Thus, it ...
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