What might be nice would be clip-ons that “decorrect” for those aging viewers whose far-vision prescription is too powerful to allow them to read comfortably. If you play a musical instrument while reading from a score, it helps to be able to have the entire field of view in appropriate focus for the score.
We are in the same boat, if you have astigmatism. People look at me funny when I take off my glasses to read.
I have that problem with computer use, I had my doctor do a pair of RX computer single distance lens glasses, it solved the problem. You can get those as cheap as $30 from Walmart vision centers. They can set your focal length to what you want, they do it for my regular glasses as I do most of my reading and quilting in my lap because of the arthritis in my hands (less strain on my arms and hands).