The following data is interesting:
"In a recent study, nearly one-third of blind respondents reported that their experiences were not successful or unreliable when using Learning Management Systems in general. The study found almost all of the features that good online instructors use, namely, assignments, discussion boards, whiteboards, graphics, timed exams, email, real-time chats and recordings were problematic. In particular, assessments which used matching and synchronous chats were the worst offenders. "
and
".... a 2008 study released by the American Foundation for the Blind found that nearly one third of those students with disabilities who used assistive technology… >>>