I tried a parasite clean with Chlorine Dioxide and wormers, which was good. After completing that, a few months later I started taking Lugol's Iodine, starting with 1 drop on the first day, which initially gave me a slight headache probably due to parasite or other types of die-off, then increased it to 2, then 3 and 4 drops. After about two weeks, my visual processing ability increased (which I had also experienced briefly during the Chlorine Dioxide cleanse), including 3d spatial recognition, and my eyesight has improved, which is really nice; I can see long distances more clearly than in my youth! Oh, and my urine flow from an enlarged prostate has increased!