So a lot of "remote jobs" in the West have an in-person component or have strict language requirements (e.g. have to talk to customers, and the company wants to project being a US-based business).
Remote jobs that pay well enough are hard to come by for that reason. Plus a lot of people would love a fully remote job so they likely get a lot of highly qualified applicants when they do appear.
Sorry if this is unhelpful/not what you asked. Just trying to explain why finding these jobs isn't easier.
There is a general trend to off shore this sort of role, but there is also a need to keep these roles inland to allow companies to keep compliance, occasional visits to site without visa issues and to protect against loss of IP. This creates opportunities for OP's friend
I wish you the best.
Here's an article from 2010:> http://gizmodo.com/5620079/giz-explains-how-blind-people-see...
In some cities and states, they have the ability to hire disabled people without impact to their staffing/fill level. In New York, it's part of civil service law section 55b