On your own.
You shouldn't need someone sitting next to you to get something done. If a screen reader can't reach a button, or a button has no name, we don't ship it.
Dakkak Labs
We build apps for blind and low-vision people. We test everything with a screen reader before we release it, and the apps work just as well for sighted people.
Our approach
What we check.
Clear labels.
We name buttons the way a person would, like "Play description", and keep them where you expect them, so you're not hunting.
Any device.
Some people listen, some zoom in, some never touch a mouse. We check each of those before we release anything, and again after every update.
Our apps
AudioViz.
Our first app. It adds spoken descriptions to videos, so blind and low-vision people can follow what happens on screen.