Glue ear (otitis media with effusion) is the most common cause of hearing loss in Australian children. It occurs when thick, sticky fluid accumulates in the middle ear without active infection, dampening the eardrum's ability to transmit sound. While glue ear often resolves on its own, persistent cases can impair speech development and learning, making early specialist assessment important.
Glue ear, medically known as otitis media with effusion (OME), describes the accumulation of fluid in the middle ear space behind an intact eardrum. Unlike acute ear infections, glue ear does not typically cause pain, fever or visible infection. The fluid ranges from thin and watery to thick and glue-like, and it prevents the eardrum and ossicular chain (the three tiny hearing bones) from vibrating efficiently.
The condition can affect one or both ears. Bilateral glue ear (affecting both ears) causes greater hearing impairment and is more likely to require treatment. Approximately 80 percent of Australian children experience at least one episode of glue ear before starting school, with peak incidence between ages two and five.
Glue ear is often called the "silent" ear condition because children rarely complain of pain. Parents and carers should watch for:
In adults, glue ear presents with muffled hearing, ear fullness, autophony (hearing your own voice loudly) and occasionally tinnitus. Adult-onset unilateral glue ear should always be investigated to exclude a nasopharyngeal cause.
Glue ear develops when the Eustachian tube fails to ventilate and drain the middle ear properly. Contributing factors include:
At Central Sydney ENT, our specialists use a combination of clinical examination and objective testing to assess glue ear:
Otoscopy and pneumatic otoscopy: Visual examination of the eardrum, which typically appears dull, retracted or amber-coloured with visible fluid levels or air bubbles. Pneumatic otoscopy tests eardrum mobility, which is reduced when fluid is present.
Tympanometry: An essential objective test that measures eardrum compliance and middle ear pressure. A Type B (flat) tympanogram confirms fluid in the middle ear. This test is quick, painless and reliable even in young children.
Audiometry, Age-appropriate hearing tests to quantify the degree of hearing loss. Typical conductive hearing loss from glue ear ranges from 20 to 40 decibels, equivalent to the effect of wearing earplugs. Even this mild-to-moderate level of hearing loss can significantly impact a child's speech and learning.
Nasendoscopy: A flexible fibre-optic camera passed through the nose to examine the adenoid pad and Eustachian tube openings. This is particularly important when adenoidectomy is being considered.
Treatment depends on the duration of the effusion, degree of hearing loss, presence of speech or developmental concerns, and whether the condition is unilateral or bilateral.
Because many cases of glue ear resolve spontaneously within three months, a period of active monitoring (watchful waiting) is usually the first step. During this time, strategies to maximise communication include speaking face-to-face, reducing background noise, and ensuring the child sits near the teacher at school. Autoinflation devices such as the Otovent balloon may help promote Eustachian tube opening in older children.
Grommet insertion (myringotomy with ventilation tube placement) is the standard surgical treatment for persistent glue ear. The procedure involves making a tiny incision in the eardrum, suctioning out the trapped fluid, and placing a small tube that ventilates the middle ear. Hearing improvement is typically immediate.
The procedure takes approximately 10-15 minutes under a brief general anaesthetic and is performed as a day case. Grommets remain in place for 6 to 18 months before naturally extruding as the eardrum heals. Our surgeons, including Dr Sam Hwang and Dr Philip Yeung, perform grommet insertion across all five Central Sydney ENT locations.
In children aged three years and older with recurrent glue ear, adenoidectomy (removal of the adenoids) is often performed at the same time as grommet insertion. Removing enlarged adenoids improves Eustachian tube function and reduces the rate of glue ear recurrence by approximately 50 percent.
In some cases where surgery is not appropriate or parents prefer to avoid an anaesthetic, hearing aids (bone-conduction or conventional) can be used as a temporary measure to manage the hearing loss while awaiting natural resolution.
You should seek a referral to an ENT specialist if:
Glue ear is closely linked to several other conditions treated at Central Sydney ENT:
Ask your GP for a referral to Central Sydney ENT, or call our reception team directly.
Call (02) 9747 3199