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Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception.In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6]
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 ...
The results do not go unnoticed as they decreased the number of microfilariae (larvae) loads. This was able to decrease the number of blind people due to onchocerciasis dramatically. However, another issue that arises is the fact that onchocerciasis can cause epilepsy, most likely because the level of microfilariae load required to develop ...
Elaine Macgougan, 64, suffers from a neurological condition which causes sufferers to see things that are not real.
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Where multiple people had experienced this type of vision loss on ultiple occasions off and on for months while using their phones in the dark- sometimes claiming blindness for as long as 15 ...
Charles Bonnet, the first person to describe the syndrome. The disease was first noted by the Swiss naturalist Charles Bonnet, who described the condition in 1760. [1] He documented it in his 90-year-old grandfather [23] who was nearly blind from cataracts in both eyes. [7]
Anton syndrome, also known as Anton-Babinski syndrome and visual anosognosia, is a rare symptom of brain damage occurring in the occipital lobe.Those who have it are cortically blind, but affirm, often quite adamantly and in the face of clear evidence of their blindness, that they are capable of seeing.