Ear tubes themselves rarely cause meaningful long-term hearing loss. The structural changes they leave behind on the eardrum, while common, almost never affect hearing in a way that shows up on a hearing test. The real risk comes from a small percentage of cases where the eardrum hole does not close after the tube falls out, and even that can usually be repaired surgically. Separating what the tubes do from what the underlying ear disease does is the central challenge in answering this question, and it is where most of the confusion lives.
What Ear Tubes Do and Why They Go In
Tympanostomy tubes are tiny cylinders placed through the eardrum to ventilate the middle ear and drain trapped fluid. The main reason children get them is persistent fluid behind the eardrum, a condition called otitis media with effusion, that lasts three months or longer and does not respond to other treatments. They are also used for recurrent ear infections that keep coming back despite antibiotics, or for children who cannot tolerate oral antibiotics and need a route for topical ear drops to reach the middle ear directly.1PubMed Central. An Overview of the Tympanostomy Tube The tubes stay in place for months to over a year, depending on the type, and most eventually fall out on their own as the eardrum grows and pushes them out.
The hearing benefit in the short run is clear. A Cochrane review found that children with tubes spent about a third less time with fluid in their ears during the first year, and hearing improved by roughly 9 dB in the first six months and 6 dB at twelve months compared with untreated ears.2Cochrane Database of Systematic Reviews. Grommets (ventilation tubes) for hearing loss associated with otitis media with effusion in children A 9 dB improvement is roughly the difference between hearing a quiet conversation clearly and missing parts of it. A separate meta-analysis put the early benefit at a similar figure, about 9 dB at one to three months, but found that by 12 to 24 months the hearing difference between children who got tubes and those who waited had effectively disappeared.3Pediatrics. Effectiveness of Tympanostomy Tubes for Otitis Media: A Meta-analysis That equalization does not mean the tubes were pointless; the months of improved hearing during early language development may matter. But it does mean that the tubes do not leave a lasting hearing boost once the underlying condition resolves.
Tympanosclerosis Looks Alarming but Barely Affects Hearing
If you look at a child’s eardrum months or years after ear tubes, you will often see white, chalky patches. This is tympanosclerosis, a calcium deposit that forms in the eardrum tissue, and it is extremely common after tube placement. One long-term observational study found that about 59% of eardrums that had tubes showed tympanosclerosis at some point during follow-up, though the patches sometimes faded over time and only 42% still had them at the final examination.4PubMed. Tympanosclerosis of the ear drum in children
Parents understandably worry when they see those white spots or hear the term in a follow-up visit. But the hearing impact is negligible. A study that specifically measured hearing in ears with and without tympanosclerosis after tube placement found the difference was less than half a decibel, which is far too small for anyone to perceive. The researchers concluded that tympanosclerosis from tubes “cannot serve as an argument against the use of ventilation tubes.”5JAMA Otolaryngology–Head & Neck Surgery. Hearing Loss in Tympanosclerosis Caused by Grommets A separate study of young adults who had tubes as children did find that structural eardrum changes were a factor linking tube insertion to hearing differences, but the distinction between changes caused by the disease and changes caused by the tube itself is difficult to tease apart.6PubMed. Hearing loss in young adults who had ventilation tube insertion in childhood
Persistent Perforation Is the Main Structural Risk
When a tube falls out or is removed, the tiny hole in the eardrum normally heals shut within weeks. In a small number of cases it does not. For standard short-term tubes made of Teflon or similar materials, the persistent perforation rate is around 1% to 7%, depending on the study and the tube type.7PubMed. Ear drum perforations in children after ventilation tube treatment8PubMed. Factors affecting persistent tympanic membrane perforation after tympanostomy tube removal in children Long-term or T-shaped tubes, which are designed to stay in place longer for children with more severe disease, carry a substantially higher perforation risk. One study found a 24% perforation rate in the T-tube group compared with 2% in a short-term grommet group, and the risk was directly related to how long the tube stayed in the eardrum.9PubMed. Long-term follow-up of children inserted with T-tubes as a primary procedure for otitis media with effusion Another study of long-term tubes reported a 19% rate of persistent perforation after extrusion or removal.10PubMed. Long-term ventilation tubes: results of 726 insertions
A persistent perforation matters for hearing because it disrupts the eardrum’s ability to vibrate normally and transmit sound to the middle ear bones. But how much hearing loss it causes depends on the size of the hole and the anatomy of the individual ear, not just on whether a hole exists.
How Perforation Size and Ear Anatomy Shape the Hearing Impact
A pinhole perforation left by a tube is not the same thing as a large eardrum perforation from chronic infection. The hearing loss from any perforation depends on two main factors: the size of the hole and the volume of the middle ear space behind it. Multiple studies converge on these findings. Hearing loss increases as perforation size increases, and ears with smaller middle ear volumes experience larger hearing gaps than ears with more air space behind the eardrum.11PubMed Central. Determinants of Hearing Loss in Perforations of the Tympanic Membrane12PubMed Central. Determinants of Conductive Hearing Loss in Tympanic Membrane Perforation
One study found that the difference in hearing between ears with small and large middle ear volumes could be 10 to 20 dB at certain frequencies, a substantial gap. Hearing loss from perforations also tends to be worse at lower frequencies, the range that carries much of the bass in speech and music, and improves at higher frequencies.11PubMed Central. Determinants of Hearing Loss in Perforations of the Tympanic Membrane Perforations that span both the front and back halves of the eardrum, or that contact the tiny hammer bone in the center, tend to produce more hearing loss than small perforations confined to one area.13PubMed Central. The Effect of Tympanic Membrane Perforation Site, Size and Middle Ear Volume on Hearing Loss
The practical upshot: a small residual perforation from a tube in a child with a normal-sized middle ear cavity usually produces mild hearing loss, often in the range that is not noticeable in daily life. A larger perforation, or one in a child whose middle ear is scarred and shrunken from repeated infections, can produce more noticeable loss. But even then, the hearing loss is conductive, meaning the inner ear and nerve are intact, and it is usually fixable.
Separating What the Disease Does from What the Tube Does
This is the most important and most overlooked piece of the puzzle. Children who get ear tubes are not a random sample of children. They have more severe or persistent ear disease than the kids who never need tubes. The disease itself, years of fluid sitting in the middle ear and repeated infections, damages the eardrum and middle ear structures independently of anything the surgeon does. Chronic ear infections can cause permanent injury to the eardrum and the tiny bones of hearing.14PubMed Central. Effect of Ear Infections on Hearing Ability: A Narrative Review on the Complications of Otitis Media Research tracking children with middle ear fluid over a decade found that the effusion itself was the likely cause of eardrum changes, and suggested that middle ear problems in childhood may contribute to hearing loss later in life when combined with normal age-related decline.15PubMed. Possible long-term consequences of middle ear effusion
A large population-based study found that children who received tubes were several times more likely to eventually need hearing aids or other hearing devices compared with children who never had ear disease at all. But the comparison that matters more is against children who had the same ear disease but did not get tubes. Even in that comparison, the tube group had higher odds of needing hearing devices.16PubMed Central. Association of tympanostomy tubes with future assistive hearing devices-a population based study That finding sounds alarming, but it has to be interpreted carefully. Children who end up getting tubes tend to have more severe or refractory disease than those managed without surgery, a classic confound in observational research. The tube cohort was sicker to begin with, and sicker ears produce worse long-term outcomes regardless of the treatment chosen. The study cannot tell us whether the tubes themselves caused the worse hearing or whether the severity of the disease that led to tube placement was the real driver.
Ear Drops Through Tubes and Inner Ear Risk
A less well-known pathway to hearing loss after tube placement involves the ear drops used to treat drainage episodes. Because the tube creates an open channel to the middle ear, any drops placed in the ear canal can reach the round window membrane, which separates the middle ear from the delicate inner ear. Most modern ear drops prescribed for children with tubes use fluoroquinolone antibiotics like ciprofloxacin, which have been studied in this setting and shown to be safe for hearing.17Pediatrics. Topical Ciprofloxacin/Dexamethasone Otic Suspension Is Superior to Ofloxacin Otic Solution in the Treatment of Children With Acute Otitis Media With Otorrhea Through Tympanostomy Tubes18The Pediatric Infectious Disease Journal. Ciprofloxacin 0.3%/Dexamethasone 0.1% Sterile Otic Suspension for the Topical Treatment of Ear Infections: A Review of the Literature
The concern centers on older aminoglycoside-containing drops, particularly those with neomycin or gentamicin, which are known to be toxic to inner ear hair cells. A review of the evidence found that aminoglycoside ear drops can occasionally cause hearing loss when used through a perforated eardrum over a long period.19PubMed Central. Ototoxicity of Topical Antibiotic Ear Drops in Chronic Suppurative Otitis Media in Humans: A Review of the Literature A large study of over 134,000 children found that a single prescription of neomycin drops was not associated with sensorineural hearing loss, but two or more prescriptions showed a significant association with increased risk.20PubMed. Sensorineural hearing loss associated with neomycin eardrops and nonintact tympanic membranes Unlike conductive loss from a perforation, sensorineural loss from ototoxic drops affects the nerve pathway and is not surgically correctable. This is a genuinely preventable source of harm: if your child has tubes, make sure any prescribed ear drops are fluoroquinolone-based rather than aminoglycoside-based, and ask if you are not sure.
Fixing a Perforation That Does Not Heal
When a tube site does not close on its own, a surgical procedure called myringoplasty or tympanoplasty can patch the hole. The success rate in children is reasonable. One study reported closure in about 75% of cases, with significant hearing improvement after the procedure, particularly at the low and high frequencies that had been most affected.21PubMed. Pediatric myringoplasty: Prognostic factors in surgical outcome and hearing threshold recovery Children who had had more rounds of tube insertions had a higher chance of the repair failing, with each additional tube insertion raising the odds of re-perforation.21PubMed. Pediatric myringoplasty: Prognostic factors in surgical outcome and hearing threshold recovery
Interestingly, surgeons have noted that when a child has a perforation in the opposite ear that is dry and stable, it is usually the result of the tube placement itself rather than a sign of ongoing disease. These children tend to do very well with surgical repair, with outcomes similar to children whose other ear is completely normal.22JAMA Otolaryngology–Head & Neck Surgery. Pediatric Tympanoplasty: Effect of Contralateral Ear Status on Outcomes That is reassuring because it means the perforation is a mechanical consequence of the tube, not evidence that the underlying ear disease is still active and likely to undermine a repair.
Do Tubes Affect Speech and Language Development?
Parents often agree to tubes primarily because they worry about hearing-related delays in speech and language. The largest and best-designed trial on this question randomized children with persistent fluid to get tubes either promptly or after up to nine months of watchful waiting. At age three, there were no significant differences between the groups on measures of vocabulary, speech-sound production, cognitive ability, receptive language, or behavior.23PubMed. Effect of Early or Delayed Insertion of Tympanostomy Tubes for Persistent Otitis Media on Developmental Outcomes at the Age of Three Years The same children were tested again at ages nine to eleven with a broader battery covering reading comprehension, spelling, writing, math, and attention. Again, no significant differences on any of the 48 measures tested.24PubMed. Tympanostomy tubes and developmental outcomes at 9 to 11 years of age
The picture may be different for children with additional risk factors. A study of children with cleft palate, who have chronically poor middle ear ventilation, found that hearing loss that persisted after tube placement was associated with speech and language delays at both 24 months and 5 years.25PubMed. The Impact of Tympanostomy Tubes on Speech and Language Development in Children with Cleft Palate In that population, tubes alone were not always enough to normalize hearing, and the residual hearing loss carried developmental consequences. For otherwise healthy children with garden-variety ear fluid, though, the evidence does not support the idea that delaying tubes by several months causes lasting harm to speech or cognition.
Tube Type and Repeat Insertions Matter
Not all ear tubes are the same, and the choice of tube directly affects the risk profile. Short-term grommets, the most commonly placed type, are designed to stay in the eardrum for about six to twelve months before falling out naturally. T-tubes and other long-term designs have flanges that anchor them in place, keeping the ear ventilated for years. The trade-off is predictable: longer ventilation but a much higher rate of the eardrum not healing when the tube comes out. As noted earlier, perforation rates can run four to twelve times higher with long-term tubes compared with standard grommets.
Tube selection also matters in specific populations. In children with cleft palate, one study compared two styles of Paparella tubes and found that the larger type produced a persistent perforation rate of about 42%, compared with roughly 13% for the smaller type.26PubMed Central. Determination of Tympanostomy Tube Types for Otitis Media with Effusion in Patients with Cleft Palate: Comparison between Paparella Type 1 and Type 2 Tubes Repeat tube insertions also compound risk. Each additional set of tubes raises the odds that the eardrum will not heal cleanly and that a future surgical repair will be harder to get right. This is why clinical guidelines emphasize that the decision for long-term tubes or a third set of tubes should weigh the ventilation benefit against the growing cumulative risk of complications.
Follow-Up Visits and Why They Matter
The updated American Academy of Otolaryngology clinical practice guideline recommends that children with tubes have their ears examined within three months of insertion, followed by regular periodic check-ups until the tubes come out.27PubMed. Clinical Practice Guideline: Tympanostomy Tubes in Children (Update) These visits are not just about checking whether the tube is still in place. They allow the doctor to catch a tube that is blocked, spot early signs of a perforation that may not heal, identify granulation tissue growing around the tube, and monitor hearing. A perforation detected early can sometimes be managed with a simple office-based paper patch, while one left undetected for years may require a more involved surgical repair.
Parents sometimes let follow-up lapse once the child stops having ear infections, which is understandable but risky. The tube can still be sitting in the eardrum long after the last infection, and complications like a slowly enlarging perforation can develop silently.
Biofilm and Chronic Drainage
Some children develop recurrent or persistent drainage from the tube that does not respond well to standard antibiotic ear drops. One explanation is biofilm, a slimy community of bacteria that adheres to the tube surface and resists antibiotics. A study that examined drainage specimens from children with persistent otorrhea after tube placement found that about 60% of samples showed evidence of biofilm.28PubMed Central. Identification of Biofilms in Post-Tympanostomy Tube Otorrhea When bacteria form a biofilm on the tube, they become far harder to kill with topical drops alone. This chronic drainage can keep the middle ear inflamed and, if the tube eventually comes out, leave behind a damaged eardrum more likely to perforate permanently. Researchers have identified proteins that hold these biofilms together, which may eventually lead to targeted treatments that break the biofilm apart at the bedside rather than requiring tube removal and replacement.
Water Precautions After Tubes
One of the most common parental concerns after tube placement is whether their child can swim or bathe normally. The fear is that water entering through the tube will cause infection and potentially damage the ear. The evidence here is surprisingly reassuring. A randomized trial found no significant difference in drainage episodes between children whose parents were told to use ear protection during water exposure and those given no water precautions at all.29PubMed. Effect of Water Precautions on Otorrhea Incidence after Pediatric Tympanostomy Tube: Randomized Controlled Trial Evidence Only about a third of drainage episodes in either group had any connection to water exposure in timing; the majority were instead associated with upper respiratory infections.
A Cochrane review reached a similar conclusion, finding that ear plugs produced a very small reduction in drainage episodes that was unlikely to be clinically meaningful. The review calculated that a child would have to wear ear plugs for nearly three years to prevent a single episode of ear drainage, and recommended against routine water precautions on the grounds that the minimal benefit does not justify the cost and hassle.30Cochrane Database of Systematic Reviews. Water precautions for prevention of infection in children with ventilation tubes (grommets) Current guidelines align with that view. Surface swimming and normal bathing are generally fine. Deep diving, which forces water under pressure through the tube, is a different situation and is typically still discouraged, but everyday water play does not appear to raise the risk of infection or hearing complications.