Tell your doctor exactly how your eye feels so he or she can determine whether an infection or an allergy is causing your conjunctivitis.Signs and symptoms include: Redness of the eyes or the edges of the eyelids Swelling of the eyelids Overflowing tears Thick discharge Sticky eyelids Crusty eyelids (especially after sleeping) Itching or feeling of sand in the eye Don???t rub your eyes.Only a doct