I worked with vocational rehab to in theory develop a plan of reasonable accomodations and get them in place plus provide me with whatever might make work easier (we discussed a computer a lot). In the end voc. rehab decided I was actually too ill to be working and should go on SSDI which I chose to ignore. I was able to work another 4 years after that so I was pretty disappointed that they gave up on me rather easily (it was my caseworker who was new to the job). But in general they can help with this and keep it all within ADA. The one thing they did do was provide an occupational therapist to follow me several days and then she wrote a report and educated my supervisors about how to help me succeed. Nobody actually listened but we did try at least. Most experiences are more positive than mine.

Voc. rehab has different names in different states but shouldn't be too hard to find.