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Visual impairment is caused by factors including brain damage, vision loss, and others. [4] Of the vision rehabilitation techniques available, most center on neurological and physical approaches. According to the American Academy of Ophthalmology, "Provision of, or referral to, vision rehabilitation is now the standard of care for all who ...
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]
Orientation and Mobility training began after World War II when techniques were developed to help blind veterans of the war. Soldiers who had been blinded in battle were sent to recuperate at Valley Forge General Hospital before entering Avon Old Farms Convalescent Hospital, the U.S. Army's former experimental rehabilitation center for blind soldiers in Avon, Connecticut. [2]
Cortical visual impairment (CVI) is a form of visual impairment that is caused by a Brain problem rather than an Eye problem. (The latter is sometimes termed "ocular visual impairment" when discussed in contrast to cortical visual impairment.) Some people have both CVI and a form of ocular visual impairment.
Impaired visuospatial skills can result in, for example, poor driving ability because distances are not judged correctly or difficulty navigating in space such as bumping into things. [ 1 ] Visuospatial processing refers to the "ability to perceive, analyze, synthesize, manipulate and transform visual patterns and images". [ 2 ]
Agnosias are sensory modality specific, usually classified as visual, auditory, or tactile. [2] [3] Associative visual agnosia refers to a subtype of visual agnosia, which was labeled by Lissauer (1890), as an inability to connect the visual percept (mental representation of something being perceived through the senses) with its related semantic information stored in memory, such as, its name ...