FWIW i have it on good authority that Apple employs at least 4-5 blind developers on the accessibility team alone, possibly more elsewhere in the company.
Legally blind developer here. I still have some vision in one eye and I make extensive use of it as far as being able to primarily code with screen magnification and some spoken text for select code all using OS X). I've had good success in my career but I will say I've had to at times work a lot harder to get the same results as fully sighted coworkers.
I'm mostly responding to encourage you to keep at it, and if you haven't tried Mac OS, maybe give it a whirl. Apple is pretty good about accessibility and their accessibility team is very good at accepting and acting upon feedback.