Back To Basics: How Poor Usability Effects Accessibility
http://www.frontend.com/accessibility/back-to-basics-how-poor-usability-effects-accessibility.html

Frontend Infocentre
2009

Abstract:

In recent user testing with a range of participants including Visually Impaired (VIP) and Blind users we found that the majority of problems were common across all groups. However the effect of poor usability is more severe for users with visual disabilities. Surprisingly all of the issues are very familiar and are easy to fix so we thought we’d revisit some of the basics of accessible web design.