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Computer vision syndrome. 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.
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.
Tactile hallucination. Formication, a type of tactile hallucination, is the feeling of imaginary insects or spiders on the skin. Tactile hallucination is the false perception of tactile sensory input that creates a hallucinatory sensation of physical contact with an imaginary object. [ 1] It is caused by the faulty integration of the tactile ...
“We know we missed people,” he said. “We also know that patients who have severe brain injury have what are called fluctuations in arousal. They have good and bad times of the day.”
On TikTok, users tout the benefits of wearing compression socks while flying and urge others to wear them on long-haul flights, too. Compression socks can help reduce swelling and the risk of ...
Noah Haggerty. July 29, 2024 at 3:00 AM. Bob Stephens, of Rancho Cucamonga, is among the many amateur astronomers who are eagerly awaiting the appearance of the Blaze Star, a nova that occurs ...
Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
The detached retina was caused by a cancerous tumor that had wrapped around Hensley’s optic nerve. She was diagnosed with ocular melanoma that began when the freckle in the back of her eye ...