I think to many people are interpreting what someone might have said by lightening them. Yes honey kills germs and bacteria, has been used for centuries. It's amazing; i use it on deep wounds or cuts, heals in half the time with no red or itchiness. Yes, if you use raw honey and water, dilute it and an eye dropper and put in your eyes it will clear eyes up, great for allergy sufferers helps foggy eyes clear up, red eyes LIGHTEN up. I'm pretty sure someone read something wrong when they told you that it would change there color.Oh and to forwarn you, it will sting at first but you will be amazed at how well honey works better then eye drops!