Hi, Thank you for asking your querry on healthcaremagic.com and giving us this opportunity to clarify your doubt. Well, from what you say, sounds like it is an infective conjunctivitis that is running in your family currently. Its generally a contagious one, which immediately spreads from one eye to the other especially within the same house. I also want you to check whether any of your kids has got a granular rash on the body. I also hope the 2 elder ones have been vaccinated against measles and all other communicable diseases. If yes, then its not much of a concern, though you must see a pediatrician. They all will need an antibiotic eye drop and an eye ointment for which your doctor can give you the prescription. Meanwhile, you take care that rest of the members of the family are careful while handling the children or any of their things. Wash your hands regularly and keep using hand sanitizer very frequently. Try and keep the childrens eyes clean by wiping the secretions with a clean and sterilised swab of cotton. The eyes should always be cleaned from towards the nose to the outside. Kindly do not send them to school or any other social gatherings. Keep their towels, napkins, clothes and utensils separate. Allow them to drink lots of water and liquids- that will help the secretions to remain thin. I hope i have been successful in answering your questions aptly and promptly. Hope we did not keep you waiting for a long time. Take care and stay healthy.