Editing Computer accessibility (section)

=== Visual impairment ===
Since computer interfaces often require visual input and provide visual feedback, another significant challenge in computer accessibility involves making software usable by people with visual impairments.

For people with mild to medium vision impairment, things like large [[Typeface|font]]s, high DPI displays, high-contrast themes and [[icon (computing)|icon]]s combined with auditory feedback and screen magnifying software are very useful. In the case of severe vision impairment such as blindness, [[screen reader]] software that provides feedback via [[text to speech]] or a [[refreshable braille display]] is a necessary accommodation for interaction with a computer.

About 8% of men and about 0.4% of women have some form of [[Color blindness|color-blindness]].<ref>Chan X, Goh S, Tan N (2014). "Subjects with colour vision deficiency in the community: what do primary care physicians need to know?". Asia Pacific Family Medicine. 13 (1): 10. DOI:10.1186/s12930-014-0010-3.</ref> The main color combinations that might be confused by people with visual deficiency include red/green and blue/yellow. However, in a well-designed user interface, color isn't the primary way to distinguish between different pieces of information.