A few people already mentioned video magnifiers, which are basically a screen with a camera to magnify stuff like books, letters, pillboxes, ... [1]
My grandmother had a professional video magnifier and it helped her greatly to deal with her macular degeneration and allowed her to read and write letters or fill forms, so that should cover the quizzes. She used it about an hour per day and handled it surprisingly well given that she'd avoid most technology, e.g. handling a tablet would have been unthinkable for her.
Prices for new video magnifiers are in the thousands, but used ones are often available cheaply on ebay, and some health providers may cover part or all of the cost as well. You can also try to build your own, like my simple Raspberry Pi based approach [2]. The documentation is a bit old, it lacks the new autofocus camera and a basic text-to-speech implementation.
Other alternatives are tablets / phones with the accessibility features as mentioned by others, or bigger arm-mounted magnifying glasses that are used e.g. in nail studios.
Usually local or national organisations for visually impaired can give concrete advice, and some bigger events have a good overview of the overall space of assistive aid (e.g. in Germany [3], UK [4]).
And to repeat others, there are some good treatments available to slow the decay under certain conditions.
