Technology for the Visually Impaired

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Technology for the Visually Impaired

The term "visual impairment" is used to describe a wide range of conditions which affect clarity of vision and visual field. By using a computer with appropriate software and hardware the visually impaired user can be given access to standard resources. 

Getting the environment right

An appropriate working environment is important for people with visual impairments. Glare free lighting, away from direct light, and a good working position can make it easier for them to use their vision effectively. This is particularly important for school situations where pupils may be reluctant to express their needs.

Setting up a computer for someone with a visual impairment

Settings for text sizes, fonts and colours can be used to alter the appearance of the screen and to increase its legibility. The monitor controls can be used to alter contrast and brightness. A larger or higher quality monitor may be easier to see. An anti-glare screen may be required for some users. 

Screen magnification Software

Special screen magnification software such as Supernova Magnifier and ZoomText Magnifier can be used to give even more control over the screen display to adapt it to meet an individual's needs. This software can also help by keeping track of events on the screen and alerting the user. This will help those who can only see a small portion of the screen clearly at any one time.

Using speech with the computer

Computers can use speech synthesis to read text and screen contents giving visually impaired and blind users access. Text to speech software such as Co:Writer adds speech support to standard software to give additional help to someone with visual difficulties. Those with very severe difficulties may require specialised speech screen reading software such as Dolphin ScreenReader which uses naturally sounding voices to read documents, emails, web pages and other applications in detail