Accessibility Hardware

Hi,

This isn't specifically a linux question but I ask for the groups input on this matter.

I have a user that is, unfortunatly, losing his sight.

Can anyone give me tips on hardware I can buy that might make his job easier? Something like big giant keyboards or magnifying screens?

Google turns up, well googles, of information but I don't know where to start. Surely someone has experience in this area and can recommend manufacturers, etc.

Any input is much appreciated.

Thanks.