Thanks for the interesting reply, Titter. It's a daunting and difficult subject. Earlier this year I sent a letter explaining my condition, situation and abilities to a games developer. They had a customer support role open; as I am the 'go-to guy' for all of my neighbours', family and friends' computer issues and as I have a great deal of patience I thought this might be something I could try to manage.
Sadly, they weren't receptive to the idea.
Thank you for taking the time to answer. Articles and comments like these at least give me a bit of hope that there might be some way of making 'it' work at some point.