I found this info in the latest B-Greek Digest, and since I have been asked about this subject several times, I thought it would be a good idea to quote it here. Sarah J. Blake has first-hand knowledge of the difficulties faced by blind and visually impaired people who pursue the study of Hebrew and Greek, and writes in the following terms:

I thought this might be of interest to those on the list who teach. I am a seminary student who has studied both Hebrew and Greek; and I have put together a web site with information for blind students and college/seminary professors about issues of special concern when a blind student studies biblical languages. Of particular interest to you who teach will be the overview article at the top of the resources section, which explains the technology commonly used by students who are blind and how it is useful in the study of biblical languages.

The site is located at
http://faith.growingstrong.org/languages.html