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Scintillating scotoma is a common visual aura that was first described by 19th-century physician Hubert Airy (1838–1903). Originating from the brain, it may precede a migraine headache, but can also occur acephalgically (without headache), also known as visual migraine or migraine aura. [4]
Closed-eye hallucinations and closed-eye visualizations ( CEV) are hallucinations that occur when one's eyes are closed or when one is in a darkened room. They should not be confused with phosphenes, perceived light and shapes when pressure is applied to the eye's retina, or some other non-visual external cause stimulates the eye.
Persistence of vision is the optical illusion that occurs when the visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye. [1] The illusion has also been described as "retinal persistence", [2] "persistence of impressions", [3] simply "persistence" and other variations.
Tunnel vision; Scotoma. Blind or dark spots; Curtain like effect over one eye; Slowly spreading spots; Kaleidoscope effects; Temporary blindness in one or both eyes; Heightened sensitivity to light; Auditory changes. Hearing voices or sounds that do not exist: auditory hallucinations
Neurology, ophthalmology. Diplopia is the simultaneous perception of two images of a single object that may be displaced horizontally or vertically in relation to each other. [1] Also called double vision, it is a loss of visual focus under regular conditions, and is often voluntary.
Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.
Causes Peripheral (Posterior) vitreous detachment, retinal detachment, age-related macular degeneration, ocular (retinal) migraine / migraine aura, vertebrobasilar insufficiency, optic neuritis, occipital lobe infarction (similar to occipital stroke), sensory deprivation (ophthalmopathic hallucinations)
Netflix's Kaleidoscope is a heist story—with a twist.While you've likely seen Ocean's Eleven, Reservoir Dogs, and Baby Driver (and if you haven't seen Widows, the time to check that one out is ...
Common causes of scotomas include demyelinating disease such as multiple sclerosis (retrobulbar neuritis), damage to nerve fiber layer in the retina (seen as cotton wool spots) due to hypertension, toxic substances such as methyl alcohol, ethambutol and quinine, nutritional deficiencies, vascular blockages either in the retina or in the optic ...
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.