Most of us think of the Internet as a vi- sual medium. We read the text, we try to ignore the flashing ads, and we click on certain screen coordinates with our mouse. All of these are highly visual activities.
Blind users are generally unable to use a mouse.
Instead, they use their key- board to navigate Web pages. Most often, blind users depend on software that reads the Internet to them. One way to make graphics accessible to blind users is to provide a textual equivalent so that the screen reader can read it. A true story. Interestingly, he was never instructed on ways to make his page accessible.