Wash your hands before using Chloramphenicol+Dexamethasone to avoid contamination, and do not touch the tip of the dropper. If you wear contact lenses, remove them before using Chloramphenicol+Dexamethasone. To use this medicine tilt your head back, look up, and pull down the lower eyelid to make a pouch and then put Chloramphenicol+Dexamethasone.