I think the question could have been posed more reasonably by asking what people do for work. Your wording implies that you expect that blind people do not work, which may or may not have been your intention.

It's true that blind people are unemployed at a higher rate than sighted people. With that said, there are a number of complicating factors, one of them being the expectation (unfortunately upheld by your question) that blind people are unfit for work. This low expectation can be a self-fulfilling prophecy, as has been shown with other groups once deemed to be unfit for paid work, such as women. There are some demographic trends at work that influence employment statistics as well--blind people are more likely to be older and/or in poor health, though of course many or most VI people don't fit that profile.

Anecdotally, I've noticed that blind people tend to gravitate most toward professions like programmer, teacher, lawyer, and entrepreneur. These professions allow a higher degree of control over how work gets done. Blue collar work can be harder and can require special training, but companies like FedEx employ many blind people. VI are more likely to be their own bosses and to start their own business as well, since that gives more control and since discrimination is less of a factor. Driving is a major barrier, and blind people often do better in cities with public transportation for that reason.

This question could have been answered with a little research on Google, so you perhaps deserve a little chiding. But once asked I think questions like these need a full answer, since there are many misconceptions about what blind people are and are not able to do. I hope you'll follow up your question with some research of your own, and feel free to follow up with more questions in this thread.