Vision

Although it’s true that most blind people do have some degree of vision, for all intents and purposes, one can say that people who are blind do not use their eyes to access the web, because whatever vision they have is not useful enough for this kind of task. This means that a computer monitor and mouse would be much less useful to a person who is blind. It’s not that blind people are incapable of moving or clicking a mouse; it’s just that they don’t know where to move it or when to click it, since they can’t see what’s on the screen.  As a result, most blind computer users rely on the keyboard for navigation and key structural cues to understand the content.