in addition to what Mike said, I’m late fifties and can still read a menu without my glasses despite having astigmatism. No problems seeing anything on my 530 and these are my usual screens: What is on your cycling computer screen?
Eyesight is kinda like shoes, what works for me may not work for you. For reference in the garage I workout on the trainer without my glasses and no problem seeing the info on my 530. On the road my sunglasses have progressive lenses, definitely makes everything on 530 look crisp and clear (vs no glasses). My everyday glasses are progressives and have correction for reading computer screens, books, and menus. Been wearing glasses for 40+ years.