How Common Is Retinal Detachment in High Myopia?

Retinal detachment is roughly 39 times more common in people with high myopia than in those without significant nearsightedness. A large U.S. study of commercially insured patients found that high myopes experienced about 869 retinal detachments per 100,000 person-years, compared with just 22 per 100,000 person-years in non-myopic eyes.¹ That gap is large enough to make retinal detachment one of the most important sight-threatening risks that comes with severe nearsightedness, and the relationship between eye length and retinal vulnerability turns out to be steeper and more nuanced than a single number can capture.

Putting the Numbers in Context

To understand what “39 times more common” actually means for an individual, it helps to translate the rates. Among non-myopic people, roughly 22 out of every 100,000 develop a rhegmatogenous retinal detachment (the most common type, caused by a tear or hole in the retina) in a given year. For people with moderate myopia, the rate climbs to about 68 per 100,000. For high myopes, it jumps to nearly 869 per 100,000.¹ In plainer terms, a highly myopic person has close to a 1-in-115 chance of experiencing a retinal detachment in any single year. Over a lifetime, cumulative risk climbs considerably higher.

These figures come from phakic eyes, meaning eyes that still have their natural lens. That distinction matters because cataract surgery adds its own layer of risk, which we’ll get to. The point is that even before any surgery enters the picture, high myopia alone substantially raises the odds.

Why Longer Eyes Are More Vulnerable

A normal adult eye is roughly 23 to 24 millimeters long from front to back. In high myopia, that measurement stretches well beyond 26 mm and sometimes past 30 mm. The extra length is not just an optical inconvenience that blurs distant objects. It physically stretches the retina, the vitreous gel inside the eye, and the choroid (the blood-vessel layer behind the retina), and each of those changes contributes to detachment risk in a different way.

The retina itself becomes thinner and more fragile as the eye elongates. Peripheral areas are especially prone to developing weak spots like lattice degeneration, tiny holes, or patches where the retina thins enough to become translucent. In a cross-sectional study of highly myopic adults, more than half of eyes had at least one peripheral retinal lesion, with the most common being pigmentary degeneration, followed by lattice degeneration and retinal holes.² The prevalence of retinal holes jumped sharply once axial length exceeded 30 mm, going from about 6% in shorter highly myopic eyes to 30% in the longest ones.³

These peripheral lesions are not just cosmetic footnotes on an eye exam. They are the structural vulnerabilities where fluid can seep under the retina and peel it away from the wall of the eye. Not everyone who has lattice degeneration will develop a detachment, but having it puts you in a higher-risk category that most eye doctors monitor closely.

The Vitreous Factor

The vitreous is a clear gel that fills the inside of the eye. As people age, this gel gradually liquefies and eventually pulls away from the retina, a process called posterior vitreous detachment. In most people that process is harmless and happens sometime after middle age. In highly myopic eyes, it tends to happen earlier, driven by the thinner choroid and the mechanical stress of a longer eyeball.⁴

Earlier vitreous separation would not be a problem on its own if the process were always clean. But in high myopia, the vitreous sometimes pulls away unevenly, leaving strands of gel still stuck to the retina. Researchers using advanced imaging in highly myopic eyes have found abnormal patterns such as multilayered vitreous detachments, thickened vitreous cortex clinging to retinal blood vessels, and residual vitreous tissue left behind after what appeared to be a complete separation.⁴ Those sticky remnants can tug on already-thin retinal tissue, creating the tears that let fluid through and trigger a detachment.

Meanwhile, behind the retina, the choroid is dramatically thinner in severely myopic eyes. In one study comparing mild and severe myopic maculopathy, choroidal thickness averaged about 154 micrometers in the mild group and just 36 micrometers in the severe group.⁵ A thinner choroid means less blood supply to support the retina and less cushioning between the retina and the outer wall of the eye. This thinning is linked to earlier vitreous liquefaction, creating a feedback loop where the structural changes reinforce each other.

Axial Length Matters More Than Your Prescription

Eye doctors have long classified myopia by how strong the corrective lens needs to be, measured in diopters. High myopia is typically defined as worse than −6 diopters. But the physical length of the eye, measured in millimeters, turns out to be a better predictor of retinal complications than the diopter number on your glasses prescription. A meta-analysis found that retinal pathology rose steeply with longer axial length, with odds roughly quadrupling for every additional millimeter of eye length.⁶

That exponential relationship is borne out in clinical data. In a study of 200 highly myopic eyes, retinal detachment was entirely absent in eyes shorter than 26 mm, occurred in about 2% of eyes between 26 and 30 mm, and hit 33% in eyes exceeding 30 mm.⁷ Those very long eyes, past 30 mm, represent the most extreme end of the spectrum, but they illustrate why ophthalmologists increasingly want to measure axial length directly rather than rely solely on refraction.

Each additional diopter of myopia also adds risk in its own right. A recent analysis across a large dataset found that every diopter increase was associated with a 10% higher likelihood of developing rhegmatogenous retinal detachment.⁸ That per-diopter risk also applied to other myopic complications like macular degeneration, foveoschisis, and macular holes, reinforcing the idea that slowing myopia progression, even by a diopter or two, has real downstream benefits for retinal health.

Peripheral Lesions in Children

One underappreciated aspect of high myopia is that the retinal changes are not just an adult problem. In a study of highly myopic children aged 10 and under, a third of patients already had peripheral retinal abnormalities, with lattice degeneration found in 20% and retinal holes with subretinal fluid in 4%.⁹ Finding these changes so early in life underscores why pediatric myopia management has become a growing clinical priority. The goal is not just clearer vision in childhood but reducing the cumulative risk of complications over decades.

Modern myopia control strategies for children, including specialized contact lenses, atropine eye drops, and increased outdoor time, aim to slow eye elongation during the growth years. The rationale is straightforward: keeping axial length shorter translates directly into lower lifetime risk of retinal detachment, macular degeneration, and glaucoma.¹⁰ Even modest slowing of progression can matter, given how steeply risk rises with each additional millimeter of eye length.

Cataract Surgery as an Added Trigger

If you already have high myopia and then need cataract surgery, the combination raises your retinal detachment risk further. A study of very highly myopic eyes found that 8% of those that underwent cataract surgery developed a retinal detachment, compared with 1.2% of similar myopic eyes that did not have surgery.¹¹ This held true even with modern phacoemulsification, the standard and generally very safe cataract technique.

The reason is partly mechanical: removing the natural lens changes the dynamics inside the eye, accelerating vitreous detachment in an eye that already has a fragile retina. This does not mean highly myopic people should avoid cataract surgery when they need it. Vision loss from a dense cataract is often more immediately debilitating than the detachment risk. But it does mean that surgeons typically counsel these patients about the elevated risk and monitor them more closely after the procedure.

Does LASIK Affect the Risk?

A common question among people with high myopia is whether laser vision correction changes their retinal detachment risk. LASIK reshapes the cornea and changes refraction, but it does nothing to shorten the eyeball. The retina remains just as stretched, the vitreous just as prone to abnormal separation, and the peripheral lesions just as present. There have been case reports of retinal detachment occurring shortly after LASIK in highly myopic eyes, though establishing a direct cause-and-effect relationship is difficult because these eyes were already at high risk before surgery.¹²

The practical takeaway is that LASIK may make your vision sharper without glasses, but it does not reduce your underlying retinal risk profile. You still need the same regular dilated eye exams and vigilance for warning symptoms that any highly myopic person does. Some refractive surgeons will perform a thorough peripheral retinal exam and prophylactically treat any suspicious lesions before proceeding with LASIK in high myopes.

Warning Signs That Demand Urgent Attention

Retinal detachment is a medical emergency. The earlier a tear is caught and treated, the better the chance of preserving vision. The classic warning triad is a sudden increase in floaters, flashes of light (especially in peripheral vision), and a shadow or curtain creeping across part of your visual field. Acute-onset floaters and flashes need same-day evaluation by an ophthalmologist, who can examine the peripheral retina with a dilated exam to look for breaks or tears.¹³

The tricky part for highly myopic people is that they often have longstanding floaters from their abnormal vitreous, making it harder to notice when something new appears. In a study tracking the natural history of vitreous detachment, some eyes that eventually developed a full retinal detachment had only one to three new floaters plus light flashes as their sole symptoms for two to three weeks before visual field loss set in.¹⁴ That window matters enormously: a retinal tear caught before detachment can often be sealed with office-based laser treatment, but a full detachment requires surgery.

Prophylactic Laser Treatment

When an eye doctor finds a suspicious peripheral lesion like lattice degeneration with holes, they may recommend prophylactic laser retinopexy. This involves applying laser burns around the vulnerable area to create an adhesive scar that welds the retina to the underlying tissue, preventing fluid from getting underneath if a tear develops. In a study of eyes with high-risk lattice degeneration that received prophylactic laser, few went on to develop retinal detachment.¹⁵

Prophylactic laser is not recommended for every person with lattice degeneration; the decision depends on factors like whether there are holes or traction within the lesion, whether you’ve had a detachment in the other eye, and your overall risk profile. The treatment itself is quick and done in the office, but it does have limits. It cannot prevent every possible detachment, and some tears occur in areas away from the treated zone. Still, for the right patients, it is a meaningful way to reduce risk.

When Detachment Happens in the Other Eye

People with high myopia who’ve already had a retinal detachment in one eye face a meaningful chance that the other eye will eventually follow. In a study of patients with bilateral high myopia who had a detachment caused by a macular hole in one eye, about 8% developed a macular hole retinal detachment in the fellow eye over a follow-up period of up to seven years.¹⁶ This bilateral vulnerability is why surgeons almost always examine and monitor the second eye closely after treating the first.

Surgical Outcomes and Visual Recovery

If a retinal detachment does occur in a highly myopic eye, modern surgery can reattach the retina in a large majority of cases. The two main approaches are vitrectomy (removing the vitreous gel and using gas or silicone oil to press the retina back into place) and scleral buckling (placing a band around the outside of the eye to push the wall inward toward the retina). Overall primary reattachment rates across both techniques are around 85 to 90%.¹⁷

However, highly myopic eyes present extra challenges. When a detachment involves a macular hole and posterior staphyloma (a bulge in the back wall of the eye common in pathologic myopia), outcomes tend to be more variable. One comparison found that a posterior episcleral buckle procedure achieved reattachment in about 93% of such eyes, while standard vitrectomy achieved it in roughly 73%, with better visual outcomes in the buckle group.¹⁸ The choice of tamponade agent also influences results: in another study of macular hole retinal detachments in highly myopic eyes, gas tamponade achieved initial success in 94% of cases versus 54% with silicone oil.¹⁹

Even when the retina is successfully reattached, visual recovery depends heavily on how severe the myopia was to begin with and whether the central retina (macula) was detached. In a large series of highly myopic eyes, about 61% achieved final visual acuity of 20/50 or better after surgery, but greater degrees of myopic refractive error were independently associated with worse final vision.²⁰ A complication unique to highly myopic eyes is the development of macular atrophy after surgery: in one cohort, about 10.5% of eyes developed a fovea-centered atrophic lesion within months of vitrectomy for myopic traction maculopathy or macular hole retinal detachment.²¹ These realities make prevention and early intervention all the more important.

Demographic Patterns

Myopia-related retinal detachment does not affect all populations equally. A multi-institutional U.S. analysis spanning 2015 to 2024 found that Asian patients had the highest prevalence of myopia-related retinal detachments, at about 4,544 cases per 100,000, while Hispanic and Latino patients had the lowest at roughly 3,085 per 100,000.²² These disparities likely reflect a combination of differences in myopia prevalence (East Asian populations have the world’s highest rates of myopia), variations in eye anatomy, and possibly differences in access to screening and preventive care.

Genetics Behind the Vulnerability

Not all highly myopic eyes carry the same risk, and part of the explanation is genetic. In a study that performed genetic testing on 40 patients with high myopia accompanied by retinal detachment, nearly half carried identifiable pathogenic gene variants. The most common were variants in genes associated with Stickler syndrome, a connective tissue disorder that affects the vitreous and predisposes to early, aggressive retinal detachment. Patients with Stickler-related variants developed retinal detachment at a younger average age (about 35 years) and at shorter axial lengths than patients without those variants.²³

This finding has real practical implications. If you have high myopia and a family history of retinal detachment, especially detachment at a young age, it may be worth discussing genetic testing with your ophthalmologist. Identifying a Stickler variant or a similar predisposing mutation can change the intensity of your monitoring schedule and prompt prophylactic measures earlier than they might otherwise be considered. It also helps explain why two people with the same prescription can have vastly different retinal outcomes over their lifetimes.