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Screen magnifiers can be especially helpful for people with low vision, including elderly users. However, in a 2001 paper, Vicki Hanson noted that people with low vision often also have additional disabilities such as tremors. [1]
The MNREAD acuity chart or Minnesota low vision reading chart is a text based chart used to measure near visual acuity in people with normal or low vision. [1] It can also be used to measure maximum reading speed, critical print size and the reading accessibility index of a person. [2] Digital and printed types of charts are available. [3]
The software is intended to help individuals with "early vision loss, computer vision syndrome, and visual impairments such as macular degeneration and glaucoma". [5] ZoomText has dual monitor support and is capable of magnifying the screen up to 60 times; it also allows the user to choose which part of the screen is magnified.
The display screen is usually LCD or a similar flat-screen technology (although older video magnifiers have used CRT displays), and the device usually includes a lamp to illuminate the source material. Video magnifiers are designed to be mostly used by people with low vision that cannot be helped using a conventional magnifying glass.
A screen magnifier is software that interfaces with a computer's graphical output to present enlarged screen content. It allows users to enlarge the texts and graphics on their computer screens for easier viewing. Similar to desktop video magnifiers, this technology assists people with low vision.
Freedom Scientific is a company that makes accessibility products for computer users with low vision and blindness. The software they create enables screen magnification, screen reading, and use of refreshable braille displays with modern computers. [1] The company is a subsidiary of Vispero and is based in Clearwater, Florida. [2]