Just go to the health food store and buy Collodial Silver if you can't make it your own. You can get it for $10-15
Spray or drops. It'll say not to use in your eyes but it's fine. I always get "pink eye" or eye infections and use it all the time. (Eh, I don't take my contacts out enough). Just put one or 2 drops in everytime it stings or itches and it's gone within 2-3 days.
The eye doctor will just prescribe an Antibiotic drop or cream with steroids in them.