I've used Colloidal Silver , salt-solutions, and boron dilution/solutions, all with great success in my eyes.
I also wanted to try iodine! But never never never straight, of course. That would be way too strong.
So, what I did, was take one of my 1oz bottles of SSKIonce it was empty and I filled it almost full with pure steam-distilled water.
Then, I added only 1 drop of Iodine and tested it in my eye. I added one more drop, tested again, and did this repeatedly.
Once the solution just barely started to sting, I quit adding iodine. (No, I don't remember how many drops of Iodine I had to add.) Most eye solutions sting just a wee bit, so I didn't mind the stinging - I just didn't want it too harsh.
I have silver at home. I keep the Iodine EYE dilution in my purse, as my eyes trouble me most in other people's homes.