This is the baseline for many blur vision, remove this condition and vision clears up quickly,
Arteriovenous Malformations 100 830 5070 (st 1233 1271 2250 5193-4 6552 7526-3 9237) Hz
especially for those bespectacled for decades. And related ailments,
Essential Polyarteritis 80 320 730 3870 (st 1912 1593-2 2850 6540-3 7243-4 9339-1) Hz
Arteriosclerosis 70 730 5000 7250 (st 9250 3529-3 4511-7 5196-8 6848-1 7128-1) Hz
and
Giant Cell Arteritis 130 230 750 800 5250 7250 (st 3500 9547 2263-2 4225-3) Hz
Good luck.