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Some sources, such as NATO and the U.S. Department of Defense, state that "flash blindness" can be temporary or permanent. [3] Other sources restrict the use of the word to temporary, reversible vision loss, distinguishing it from permanent blindness in a hierarchy of effects: "when the eye perceives bright light one of four reactions may take ...
Temporary vasospasm leading to decreased blood flow can be a cause of amaurosis fugax. [14] [15] Generally, these episodes are brief, lasting no longer than five minutes, [16] and have been associated with exercise. [10] [17] These vasospastic episodes are not restricted to young and healthy individuals. "Observations suggest that a systemic ...
Rarely, blindness is caused by the intake of certain chemicals. A well-known example is methanol, which is only mildly toxic and minimally intoxicating, and breaks down into the substances formaldehyde and formic acid which in turn can cause blindness, an array of other health complications, and death. [66]
The following criteria are required to classify an event as an inattentional blindness episode: 1) the observer must fail to notice a visual object or event, 2) the object or event must be fully visible, 3) observers must be able to readily identify the object if they are consciously perceiving it, [3] and 4) the event must be unexpected and the failure to see the object or event must be due ...
Temporary blindness, a type of non-permanent vision loss, may refer to: Amaurosis fugax, or fleeting blindness; Conversion disorder, formerly called hysterical blindness; Flash blindness, caused by exposure to high-intensity light.
Researchers then analyzed the rate of patients diagnosed with NAION, a rare condition that is the second-leading cause of optic nerve blindness. NAION is believed to be caused by reduced blood ...
Several people who stood on stage with Donald Trump at his Tucson, Ariz., rally reported eye injuries after the event, saying they suffered pain and temporary blindness
The dazzler can be seen at the top-right, located behind the gunner thermal sight. Weapons designed to cause permanent blindness are banned by the 1995 United Nations Protocol on Blinding Laser Weapons. Dazzlers intended to cause temporary blindness or disorientation fall outside this protocol. [citation needed]
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