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I wear progressives and cannot track my arrow in flight like i could before I needed glasses. I was fortunate to make it to 47 before I needed corrective lenses. I have been told by a couple of eye docs that most people need corrective lenses around 40. I don't have any answers sorry.
I would not worry about it.Good form and follow through is looking at target.Sometimes trying to watch arrow interferes with follow through by looking around bow and moving bow arm at release.Its nice to see a hit, but not necessarily beneficial to be able to watch arrow.Use brighter nocks or fletchings to increase visibility, but you should be focused on the target, not the arrow.
I prefer not to know where each practice arrow hits. Usually only get 1 arrow in a hunting situation, so make every shot THE one shot. Focus on target and shooting form/follow through. Another thing, hitting arrows gets spendy, I rarely shoot more than 1 arrow at the same spot on a target.