Decades back an optometrist told me to look away from my close up work and at more distant things often to avoid training your eyes.
Up to that point, I was proud of being able to do VERY fine work. After that, I realized that could cost me more of my already less than perfect distance sight.
I wear readers around my neck on a strap. That way they are readily available to put on for up close. If they are not right there I would try to read without them, and it would put a strain on them, so, readily available works for me.