Breastmilk could be more harmful than helpful for pink eye. One of the few studies on whether breast milk can fight infections found that it didn't cure the most common causes of pink eye — and worse, breastmilk can introduce new bacteria into the eye and cause serious infection. Eye infections in young children can be very serious—even blinding. Don't delay seeing a doctor and don't rely only on folk remedies. There is lots of bad advice about pink eye on the internet. Never put anything in your eye that isn't approved by a doctor. Foods and herbal extracts are not sterile and can make eye conditions much worse. Bloggers who recommend breast milk for pink eye say that substances in breast milk can cure infection and soothe inflammation. But there is no evidence that this helps.