I received this link from an email I received from a co-worker. I don't have time to read the whole article at work, and it's an interesting article, so I'll just link to it here.

A Model of Successful Work Experience for Employees Who are Visually Impaired

My feeling is, as long as you are well-organized, conscientious, and manage your time well, you'll succeed, whether you have a visual impairment or not.