For inflammation of the lids, ointment is smeared between the edges. Cold water is applied to the conjunctiva for its tonic action, by keeping the eyes open and then dipping the face into a basin of water. Strong solutions like that of atropine are applied to the conjunctiva by dropping them into the outer canthus of the eye and allowing them to flow over the surface. If such a solution is to be applied frequently, it may be dropped into the inner canthus, and the head held so as to allow it to drop out of the outer canthus; for when the reverse procedure is employed the atropine may pass down the lacrimal duct, and being absorbed may produce its general effect upon the system and cause symptoms of poisoning.