My DS had this problem for weeks. I was going to suggest squirting breastmilk into the eyes as that's what fixed it for us but obviously if you're not breastfeeding that's not possible! We also used saline and cotton wool regularly. I agree with the others - be vigilant and keep doing it for a few days even after it seems to have cleared up. We were told to make sure you use fresh cotton wool for each eye and wipe from inside out. Don't get too much saline around the outside of the eye as it can irritate the skin. Also, massaging can help. Good luck!