My understanding is that blind or visually impaired people tend to use Windows because that's where the two(?) big screenreader programs run; JAWS is one[1], I forget the other but it might be NVDA[2]. Microsoft have traditionally had some focus on accessibility, e.g. there's a video from a few years back of a blind programmer demonstrating how they program in Visual Studio[3]. Outside that, Emacspeak[4] is an eyes-free Emacs, I think it can boot into that environment; it was developed by a blind person and claims:

> Emacspeak introduces several improvements and innovations when compared with screenreaders designed to allow blind users to interact with personal computers. Unlike screenreaders that speak the contents of a visual display, Emacspeak speaks the underlying information. As an example, using a calendar application with a screenreader results in the blind user hearing a sequence of meaningless numbers; In contrast, Emacspeak speaks the relevant date in an easy to comprehend manner.

> The system deploys the innovative technique of audio formatting to increase the band-width of aural communication; changes in voice characteristic and inflection combined with appropriate use of non-speech auditory icons are used throughout the user interface to create the equivalent of spatial layout, fonts, and graphical icons so important in the visual interface. This provides rich contextual feedback and shifts some of the burden of listening from the cognitive to the perceptual domain.

[1] https://www.freedomscientific.com/products/software/jaws/

[2] https://www.nvaccess.org/download/

[3] https://www.youtube.com/watch?v=94swlF55tVc

[4] http://emacspeak.sourceforge.net/