Although; I am going back to my typical writing career, before I started running my own website on my own server. However; a blind author can be a self-published author.
There are some issues as you face when you make some dollars publishing and monetizing your books, along with some potential problems what you may encounter.
Typically, writing books require a computer, an internet connection, a self-publishing account, and your tax form on file with a self-publishing platform like Draft2Digital, StreetLib, etc.
Although; if you are dependent on SSI for a long period of time, you may experience limitations for your bank accounts, and even your other financial resources.