Grommets are small ventilation tubes used to ventilate the middle ear in cases where the Eustachian tube is nor working. If the Eustachian tube is not ventilating the middle ear it can lead to an inability to equalise, feeling of blocked ears, pain, hearing loss, fluid in the middle ear and later retraction pockets. Grommets are made of various material and can be different shapes. Grommets are designed to be temporary and gets extruded. In children a general anaesthetic is needed to insert them as the ear canal can be very sensitive. In adults it can be done under local if the ear canal is wide enough.