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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]
Poliosis circumscripta, commonly referred to as a "white forelock", is a condition characterized by localized patches of white hair due to a reduction or absence of melanin in hair follicles. Although traditionally associated with the scalp, poliosis can affect any hairy area on the body, including eyebrows, eyelashes, and beards.
Visual impairment in art is a limited topic covered by research, with its focus being on how visually impaired people are represented in artwork throughout history. This is commonly portrayed through the inclusion of objects such as canes and dogs to symbolize blindness, [1] which is the most frequently depicted visual impairment in art.
These appear most often in those who are congenitally blind. Frequent movements include body rocking, repetitive handling of objects, hand and finger movements, eye poking, pressing and rubbing. [4] [1] Causes are not well understood, and treatment outcomes tend to be highly variable but generally positive. [3]
In 2002, Whitkop and other scientists examined patients born with white hair, some black locks, and depigmented skin; he diagnosed them as having black lock albinism deafness syndrome (BADS). [1] Those who were closely working with this case suggested that it was an autoimmune disorder rather than a genetic defect.
The ability to give sight to a blind person via a bionic eye depends on the circumstances surrounding the loss of sight. For retinal prostheses, which are the most prevalent visual prosthetic under development (due to ease of access to the retina among other considerations), patients with vision loss due to degeneration of photoreceptors (retinitis pigmentosa, choroideremia, geographic atrophy ...
A new study published in the journal Sleep Medicine focused on how the blind dream. For sighted people, dreaming is primarily a visual. If our dreams are a reflection of reality, how does someone ...
John Bramblitt is an American blind painter and first blind muralist. Eşref Armağan is a Turkish artist born without eyes. Keith Salmon is a visually impaired artist working in Ayrshire, Scotland. Giovanni Gonnelli, blind Italian sculptor of the 1600s. Michael Naranjo blind Native American sculptor lost eyesight in battlefield in Vietnam. [20]