Just trying to be curious here. Have you ever met a blind developer? How do they code?
I don't personally know this guy but I was really amazed how he codes without seeing anything. He has a livecoding channel and explains how he does it. https://www.livecoding.tv/parham90/
Well, I neither know a blind programmer, nor do I know much about it. At least, I read an article (German), which states that they use TTS programs which read the code and add additional information at a very very high speed so that they always know where they are in the source code and can get a hint what the surrounding code does; just like we can read the code, they get it read for them and then decide on it.
Blind people are amazing. They cannot see, but all their other senses are elevated instead, so they can do stuff like listen to that fast blabbering and make sense of it.
Mev-Rael
Executive Product Leader & Mentor for High-End Influencers and Brands @ mevrael.com
Your question reminded me this article I've read year ago which will explain you everything much better then I would be able to.
A blind Google engineer explains how he writes code
And this Quora question will provide you a lot of good answers and comments: How does a visually impaired computer programmer program?
In short: