Glue ear or otitis media with effusion (OME) is a common pathology in children, impacting approximately 90% of them before they reach school age, with a higher frequency observed between the ages of 6 months and 4 years. The etiology of OME differs between children and adults. In children, OME is mainly linked to conditions such as poor Eustachian tube function, resulting from an upper respiratory infection or an inflammatory response following a prior episode of acute otitis media. In contrast, in adults, it can be linked to conditions such as a nasopharyngeal tumor; therefore, careful assessment is essential. The main presenting symptoms of OME in children consist of hearing impairment and a feeling of fullness in the ear. Many episodes are asymptomatic and therefore are not always detected. Once diagnosed, clinically and audiologically, the treatment options vary and include a period of watchful waiting, hearing aid provision, and insertion of ventilation tubes, sometimes in combination with adenoidectomy.