There's nothing wrong with riding a sane speed and enjoying the scenery. I do the same. If it is any encouragement I had cataract surgery in both eyes about 8 tears ago. My vision became the best it probably has ever been, at least until a detached retina a few years back. I can still see OK to ride if I take it easy and avoid night riding. I have the same problem with transition from sun to shadows, esp in curves. The internal sun visor in my helmet is the cat's meow as it allows me to flip up the visor before entering a curve and then put it down again after entering the straight and the sun.
* Last updated by: 2fast4me on 10/23/2020 @ 9:18 AM *