[karmakaze]

I do have weak reading glasses and notice that changing focus between near and far is anything but instant.

I have noticed another thing though. Sometimes the text/images are sharp but doubled-imaged a small fraction of a character apart. Part of this is likely due to extra muscle effort to maintain focus. Another part is that the degree of this effect is variable. I have drastically cut down my caffeine intake as it was getting out of hand during WFH. Since reduction in consumption and sometimes choosing tea or decaf, I've noticed much less of the double-imaging and don't reach for the low-magnification (1.0) reading glasses as often.

Btw, does anyone use very weak reading glasses? I was thinking about getting something lower than 1.0 (say 0.75). Drugstores only seem to stock 1.25+ and I can find 1.0 at dollar stores, online I could probably order 0.75 to try.

Edit: a completely different theory is that taking Beat Saber fitness breaks made my weak eye less lazy since depth perception is a good part of the game.