Dyslexia is a general term for disorders that involve difficulty in learning to read or interpret words, letters, and other symbols, but that do not affect general intelligence. It is the most common cause of reading, writing, and spelling difficulties.
Of people with reading difficulties, 70-80% are likely to have some form of dyslexia. It is estimated that between 5-10% of the population has dyslexia, but this number can also be as high as 17%.
Here are some CSS tips to consider when designing web content to accommodate the dyslexic reader.
Beware Italics
Italicized characters can be difficult for dyslexics to read.
Column Widths
Use narrow column widths (60 to 80 characters). Tracking lines of unbroken text across a page can be difficult.
No Justification
Never use justified text. It causes “rivers” that make text difficult for dyslexics to read.
Use Sans-serif Fonts
Serif fonts (like Times Roman) have “feet” at the end of the letter strokes. This can be a nightmare for dyslexics to read because the letters look like they are all connected. Use sans-serif fonts.
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Resource: OpenDyslexic
OpenDyslexic is a new open source font created to increase readability for readers with dyslexia. The typeface includes regular, bold, italic, and bold-italic styles. It is being updated continually and improved based on input from dyslexic users. OpenDyslexic is free for Commercial and Personal use.
Download: http://opendyslexic.org/
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Read More Accessible Website Design Advice: Accessible Best Practice: Don’t Use Color As Part of Your Instructional Content
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WCAG 2.1: 312 checkpoints covering A, AA and AAA W3 accessibility guidelines
Section 508: 15 US federal guidelines covered by 59 accessibility checkpoints
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