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A DAISY player and audio book from Plextor. Digital accessible information system (DAISY) is a technical standard for digital audiobooks, periodicals, and computerized text.. DAISY is designed to be a complete audio substitute for print material and is specifically designed for use by people with print disabilities, including blindness, impaired vision, and dyslex
Screen readers are essential to people who are blind, [2] and are useful to people who are visually impaired, [2] illiterate, or have a learning disability. [3] Screen readers are software applications that attempt to convey what people with normal eyesight see on a display to their users via non-visual means, like text-to-speech , [ 4 ] sound ...
PDF/X is a subset of the ISO standard for PDF. The purpose of PDF/X is to facilitate graphics exchange, and it therefore has a series of printing-related requirements which do not apply to standard PDF files. For example, in PDF/X-1a all fonts need to be embedded and all images need to be CMYK or spot colors.
One aggravating factor is that a PDF reader can be configured to start automatically if a web page has an embedded PDF file, providing a vector for attack. If a malicious web page contains an infected PDF file that takes advantage of a vulnerability in the PDF reader, the system may be compromised even if the browser is secure.
Blind Brazilian photographer João Batista Maia da Silva at the 2024 Summer Paralympics closing ceremony. Blind photography is a term that refers to photographic work done by a person who is visually impaired and/or blind.
An artist's representation of how some people may see phosphenes by retinal stimulation. A phosphene is the phenomenon of seeing light without light entering the eye. The word phosphene comes from the Greek words phos (light) and phainein (to show). Phosphenes that are induced by movement or sound may be associated with optic neuritis. [1] [2]
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]
In 2019, Orbit Research together with American Printing House for the Blind released the braille e-book Graphiti, which allows blind people to explore graphical information. 2,400 points that rise to different heights are capable of transmitting topographic maps and other graphic elements such as shadows and color. The device also includes an ...