This will enable people with visual impairments access the website using assistive technologies, such as screen readers.
The information of the website is accessible with different screen readers.
https://chrome.google.com/webstore/detail/chromevox-classic-extensi/kgejglhpjiefppelpmljglcjbhoiplfn
http://www.gwmicro.com/Window-Eyes/
http://webanywhere.cs.washington.edu/wa.php
http://www.screenreader.net/index.php?pageid=2
http://www.satogo.com/
http://www.yourdolphin.co.uk/productdetail.asp?id=1
http://www.nvda-project.org/
http://www.freedomscientific.com/jaws-hq.asp