Description of scientific journal information

Hi all:

I'm attempting to figure out how to deal with making a database-driven web site accessible.  It houses scientific e-journals and this is far more challenging than the previous HTML site that I worked on before.

The site (http://www.pubmedcentral.nih.gov) includes new journal articles as well as an archive of previous issues.  There is an HTML abstract, a full text-version and a PDF version.  However, my thinking is that the images may lack the information a visually-impaired person may need to interpret the data.  Examples of a full text article is available at http://www.pubmedcentral.nih.gov/b.cgi?artid=19905.  While the descriptions, or rather captions, of the images seem to be appropriate, is it safe to assume that a user should email the author of the article for further information.  PubMed Central acts as the holder and not the editor of the documents.  

I also believe that the footnotes and figure references within the article's text will need better descriptive links, i.e. link "fig. 2A" should actually read as "fig. 2A" to accommodate a user who is just listening to the links.  

Sorry, to be so longwinded. Any suggestions or insight will be most appreciated.

Brooke Dine
Information Specialist
National Center for Biotechnology Information (NCBI)
National Library of Medicine/NIH
Bethesda, MD 20892