Conjunctivitis, also known as Pink Eye, occurs when the conjunctiva is infected with a bacteria or virus. It also may appear with severe allergies. The conjunctiva is a thin, filmy membrane that covers the inside of the eyelids and the white part of the eye. Conjunctivitis can be very contagious, especially in a school setting. This link will provide more information about pink eye. Children who have any signs of this infection should not be sent to school until they have been treated for 24 hours with antibiotics (usually 3-4 applications of the eye ointment). Once the eye has cleared, please throw out any remaining eye drops or ointment. Do not use again if a reinfection should occur.