As well as AD my mother has Macular Degeneration - the dry one - that cannot be treated so her eyesight is poor.
I have been looking for a clock that will not just tell her the time but also the date and day on a clear face.
Whilst searching 'tinternet' last week I came across the Living Spirit Fliptop Clock. Like all these things it was not cheap but eureka it works. The background is black but has large white letters and the day, date and month flip over automatically (batteries). Saturday and Sunday are different colours to the rest of the week - red & green.
It can go on the wall, but I have stood it next to my mum and she can see it well although at the moment it is a case of getting her to look in the right place but I am hopeful of the hit and miss improving.
I bought it from a large High Street catalogue retailer (if you cannot guess PM me and I'll tell you). It did cost £60 but it was the cheapest that I could find in this type of 'aid' clock (some are £175 which I view as exploitive).
So far I would say it is a good buy and if you need something along these lines would suggest you take a look.