I have similar "visions" when I take high levels of Iodine and simply recommend lowering the dose significantly.
It is probably caused by heavy metal coming out of your brain, especially if you have metal fillings in your teeth. Eating cilantro will chelate metal from the system and so will the S. American herb Amor Rico. Take that instead of drugs.
By taking pharmaceutical drugs to suppress your detox symptoms you are likely "undoing" all of the good that you did by taking the Iodine.
The whole point of taking Iodine is to get toxins such as flouride out of your system. Many pharmaceutical drugs are flouride based.