Can LASIK Cause a Retinal Detachment? What the Evidence Shows
LASIK and Your Retina at a Glance
Start here. Timing matters more than anything else. Call your eye doctor the same day, or go to an emergency room, if your vision suddenly drops in one eye, or if you see any of these changes in either eye. This holds whether or not you have had LASIK:
- A sudden burst of flashing lights, like sparks
- Many new floaters at once, like specks or threads
- A dark shadow moving in from the side
- A gray curtain over part of what you see
Those four are the warning signs of a detached retina, which has to be examined by an ophthalmologist right away1. The retina is the thin layer at the back of the eye that senses light. Most people with these signs turn out not to have a tear, but about 14 of every 100 who see an eye doctor for sudden floaters or flashes do2. Repair works better, and sight ends up sharper, when a detachment is treated early3. One phone call protects a lot.
LASIK reshapes the cornea, the clear front window of your eye. It does not reach the retina at the back. Retinal detachment has been reported after LASIK, but the American Academy of Ophthalmology's refractive surgery guideline says it is unclear whether it happens any more often than in comparable nearsighted eyes that never had surgery4. In a series followed for 10 years, about 2 of every 1,000 treated eyes had a detachment5. The larger driver is being strongly nearsighted in the first place.
Nothing here can tell you what will happen in your eye. Only an exam that sees your dilated retina and measures your cornea can do that. Use this page to know what to ask and what to watch for.
What LASIK Does and What a Detached Retina Is
LASIK uses a laser to reshape the cornea so that light lands cleanly on the retina, and it is used for nearsightedness, farsightedness, and astigmatism6. Think of it as adjusting the lens on a camera. The film at the back, your retina, is left as it was.
The retina lines the inside of the eye like wallpaper. A detachment happens when a tear lets fluid seep underneath and lift that lining off its blood supply, so the lifted part stops sending pictures to the brain. Detachments are repaired by sealing tears with a laser or a freezing probe and, once the retina has lifted, with surgery to put it back in place7. Left alone, a detachment can cause lasting vision loss in that part of the eye7.
Nearsightedness is mostly a matter of shape. The eye grows a little too long from front to back, which is why distance blurs. A longer eye stretches the retina thinner over a wider surface, and the gel inside pulls on it more readily. People who are nearsighted, and people who have had eye surgery, are listed among those at higher risk of a detached retina1. That risk exists with or without laser correction.
One large study of United States insurance records covering 85 million people counted a retinal detachment each year in about 22 of every 100,000 people who were not nearsighted, about 68 of every 100,000 who were nearsighted, and about 869 of every 100,000 coded as strongly nearsighted8. That is one database study, so read those figures as a rough scale, not as your personal odds. The pattern is the useful part: the stronger the nearsightedness, the more the retina is worth watching.
How LASIK Is Done, Step by Step
The procedure takes a few minutes per eye and is done awake, with numbing drops. An eyelid holder keeps you from blinking and a suction ring keeps the eye from moving. You may feel pressure like a finger pressing firmly on your eyelid, and at this point your vision may go dim or black. The surgeon then makes a paper-thin flap in the cornea, folds it back, reshapes the cornea with a laser, and folds the flap back down, where it attaches on its own in 2 to 3 minutes6. The dimming is part of the step, not a sign that something has gone wrong.
The suction ring is the one step that changes conditions inside the eye, and it is why the question arises. In a laboratory model using animal eyes, pressure during femtosecond flap creation rose roughly 32 to 38 mmHg above its starting point, and each suction and cutting phase lasted about 15 seconds9. That is a brief, controlled rise measured outside a living patient, so it describes the mechanism, not a patient outcome.
Here is the theory. When pressure rises and then drops quickly, the gel inside the eye can shift and tug on the retina, and a tug on a thin retina is how tears begin. The AAO guideline concludes, though, that it is unclear whether the retinal findings reported after LASIK happen any more often than in a comparable nearsighted population4. A plausible mechanism is not the same as a measured effect.
What the Published Studies Report
Reported detachments after LASIK are uncommon, and they were counted in patient series, not randomized trials. In a series of 22,296 nearsighted eyes, detachment was recorded in about 1 of every 2,000 eyes during the first year, and in about 2 of every 1,000 among the eyes still followed at 10 years5. A hospital review counted 2 detachments among the 6,112 LASIK procedures done at its own center from 1997 to 2007, and noted that rates published elsewhere run higher, about 8 to 25 of every 10,000 treated eyes10.
| Published report | Eyes followed | Detachments reported |
|---|---|---|
| Series followed to 10 years | 22,296 nearsighted eyes treated | About 2 of every 1,000 by year 10 |
| Hospital review of LASIK at one center | 6,112 procedures | 2 eyes in total |
| Range cited across earlier series | Varies by report | About 1 to 3 of every 1,000 eyes |
These are observational counts of people who chose LASIK, not comparisons against a matched group who did not. That is why the AAO guideline stops at saying it is unclear whether detachment happens more often after LASIK than in a comparable nearsighted population4. Reading past that limit, toward alarm or toward reassurance, goes further than the evidence does.
If LASIK were directly tearing retinas, you would expect detachments clustered in the days right after surgery. Instead, in the 10-year series, detachments turned up anywhere from 1 month to 10 years afterward5. That spread looks more like the ordinary long-term risk of a nearsighted eye than like an injury from surgery. The warning signs stay worth knowing for life, not just the first month.
Treatment does not change because you have had laser vision correction. Tears are sealed with a laser or a freezing probe, a lifted retina is repaired surgically, and treatment ultimately succeeds for about 9 out of 10 people7. In the hospital review after LASIK, every retina was reattached, though about half of those eyes ended with vision of 20/40 or better10. Putting the retina back is not the same as getting all the sight back, which is why speed matters.
Who Is a Good Candidate When Retinal Risk Is on Your Mind
Measurements decide this, not preference. You generally need to be at least 18. Your prescription should have held steady for about a year. Your corneas must be thick enough and healthy, your refractive error must sit within the treatable range, and your expectations need to be realistic6. Being strongly nearsighted does not rule you out, though it changes the conversation.
Many people with a strong prescription have LASIK safely. What changes is the attention your retina deserves, before surgery and for the rest of your life. In the insurance-records study, background detachment rates tracked the degree of nearsightedness8. LASIK reshapes the cornea6, so the shape of the eye behind it is unchanged. The retinal exam described below therefore matters more for you, and so does knowing the warning signs by heart.
This is the part people most often misunderstand. Reshaping the cornea does not shorten the eye or thicken a stretched retina. Your prescription can go to zero while the inside of your eye stays exactly as long as it was. Nearsighted eyes carry a higher background rate of detachment8, and rates reported after LASIK have not been shown to differ from that background4. Planning for lifelong eye exams is part of choosing LASIK.
Who Should Wait or Choose Something Else
Some conditions make LASIK a poor fit. FDA lists a prescription that changed in the past year, being under 18, autoimmune or immunodeficiency disease, medicines that slow healing, and active participation in contact sports among reasons a person is probably not a good candidate11. Being told to wait is usually about timing, not a permanent no.
Some eye histories belong on the table. FDA asks you to discuss past eye herpes or shingles, glaucoma or raised eye pressure, inflammation inside the eye, keratoconus, and any earlier eye injury or eye surgery. It also asks your doctor to check for lid inflammation, large pupils, thin corneas, and dry eye11. Severe dry eye, corneal scars, advanced glaucoma, a cataract that blurs vision, and poorly controlled diabetes are listed as reasons people are not candidates6.
A previous detachment or retinal tear does not, by itself, close the door on LASIK. It does mean the decision belongs to a retina specialist and your refractive surgeon together, working from your own retinal findings. Any previous eye surgery is on FDA's list of histories to discuss beforehand11.
What a Thorough LASIK Consultation Includes
Your surgeon owns this exam. The AAO guideline puts the preoperative assessment on the ophthalmologist who will operate. It notes that the optic nerve, the macula, and the far edge of the retina are best seen through a dilated pupil, with an indirect scope or a lens at the slit lamp4. In plain terms, your eyes get dilated and someone studies the back of the eye, not just the front.
The far edge of the retina is where thin patches and small tears hide, and it cannot be seen without dilation. Finding a weak spot beforehand lets your doctor seal it with a laser and plan your care with open eyes. Strong nearsightedness was linked to a much higher background rate of detachment in the insurance-records study8, which is why this peripheral check is worth asking about by name.
A good consultation answers more than 'am I approved.' Settle what was seen at the edges of your retina, what happens if a weak area turns up, and who you call after hours. A vague answer tells you something about the practice.
Recovery and the Months That Follow
Vision is often usable within a day, though it takes weeks to settle. The flap seals itself within a few minutes, a shield is often worn while sleeping, drops ease dryness and help healing, and eyes may feel scratchy for a few hours6. Keep the follow-up visits even if you already see well.
Almost everyone who has LASIK has dry eyes and changing vision during the day. These usually fade within a month, though for some people they take longer or they remain. Glare, halos or starbursts around lights, light sensitivity, and small pink or red patches on the white of the eye can also happen, and worse vision than before LASIK, even with glasses or contacts, is a rare risk6. Knowing this list ahead keeps a normal week from feeling like a crisis.
The habit is simple. Once a week, cover one eye at a time and look at a doorway or window frame. You are checking for a missing corner, a dark shadow, or a wobble in a straight line. Suddenly seeing flashing lights, many new floaters at once, a shadow in your side vision, or a gray curtain over part of your view are the warning signs of a detached retina, which has to be examined by an ophthalmologist right away1. Most checks find nothing, which is the point of doing them.
Risks, Cost, and a Realistic Outlook
About 9 of every 10 people who have LASIK end up seeing between 20/20 and 20/40 without glasses or contact lenses, and LASIK does not correct the age-related loss of close-up focus, so reading glasses are still likely after about age 406. That is a group average drawn from many patients, not a forecast for your eye.
Two numbers help, as long as you read them carefully. Detachment was recorded in roughly 2 of every 1,000 treated eyes across 10 years in the LASIK series5. In the insurance database, strongly nearsighted people had a rate near 869 of every 100,000 each year8. Do not subtract one from the other: one counts a decade, the other a single year, and the groups are not the same people. The fair takeaway is that the risk is real, small in any year, and mostly tied to the eye rather than the surgery.
LASIK is elective, so most medical insurance does not pay for it, and prices are quoted per eye. Ask what the quote includes, since the exam, follow-up visits, and any later touch-up are sometimes billed on their own. Ask who pays if a weak retinal spot needs laser treatment first, which is usually billed as medical care.
When to Call Your Eye Doctor
Some symptoms need attention the same day. Call your eye doctor right away, or go to an emergency room, for:
- A sudden shower of new floaters, or repeating flashing lights
- A shadow or curtain across any part of your vision
- A sudden drop in vision in one eye
- Severe eye pain, or a red and painful eye
Repair works more often, and sight ends up better, when a detachment is fixed early, before it reaches the macula, the small central part of the retina3. Being checked and sent home is a good outcome, not a wasted trip.
Other changes are worth a call, but not a dash to the emergency room. Blur that worsens after settling, glare or halos that grow instead of fading, ongoing pain, or a red and sticky eye all deserve a prompt appointment. A clear first exam does not close the question: about 3 in 100 people with an uncomplicated pulling-away of the gel inside the eye (clinical: posterior vitreous detachment) develop a retinal tear within six weeks2. If new symptoms appear after a normal exam, call again.
Match the problem to the specialist. Your refractive surgeon handles the cornea, the flap, dryness, and the sharpness of your vision. A retina specialist handles tears and detachments. A fresh gel separation with no break still carries about a 2 in 100 chance of a break in the weeks that follow, which is why a second look is sometimes booked3. If you are unsure who to call, call whoever can see you soonest.
Common Questions About LASIK and Retinal Detachment
Based on the published evidence, this has not been shown. The AAO refractive surgery guideline concludes it is unclear whether retinal findings occur more often after LASIK than in comparable nearsighted eyes that never had surgery. Large series report detachment in roughly 1 to 3 of every 1,000 treated eyes over years of follow-up. Those counts come from people who chose surgery, with no untreated comparison group, so they describe how often it happened rather than what caused it.
No. Reshaping the cornea changes how light focuses, and it leaves the length of the eye and the thinness of the retina untouched. Your glasses prescription can drop to zero while your retina stays exactly as stretched as before. That is why your eye doctor will still want to look at your dilated retina from time to time if you were strongly nearsighted, and why the warning signs stay just as relevant after surgery as before it.
There is no narrow window. In a series of more than 22,000 treated eyes followed for 10 years, detachments appeared anywhere from 1 month to 10 years after surgery. That wide spread is one of the reasons the surgery itself is not thought to be the direct cause. Practically, it means you should not relax about flashes, floaters, or a shadow just because months or years have passed.
It is a fair thing to wonder about, and the published picture is reassuring. Suction raises the pressure inside the eye for roughly 15 seconds at a time, and in laboratory measurements during femtosecond flap creation the rise was about 32 to 38 mmHg above baseline. Patient series have not shown a burst of detachments in the days right after surgery, which is what a direct injury from that step would look like. Only an exam can speak to your eye.
That decision belongs with your own retinal findings, not with a rule of thumb. Skipping LASIK does not lower your retinal risk, because that risk comes from the shape of your eye rather than from surgery. What helps is a dilated look at the far edges of your retina before you decide, treatment of any weak spot that warrants it, and a plan for regular exams afterward. Ask your surgeon to describe what your peripheral retina looks like.
No. The two surgeries work at opposite ends of the eye and do not interfere. A detachment is repaired the same way in an eye that has had LASIK as in one that has not, by sealing tears with laser or freezing and repositioning the retina. Treatment ultimately succeeds for about 9 out of 10 people, and in the hospital review after LASIK every retina was reattached, with about half of those eyes reaching 20/40 or better.
More Questions About LASIK, Nearsightedness, and the Retina
Yes, and arguably more attentively than before. LASIK removes your need for glasses, not your need for eye care, and a stretched retina cannot be seen through an undilated pupil. Ask your eye doctor how often you should be examined, given your original prescription and what was seen at the edges of your retina. For most people it is a routine visit that quietly confirms all is well.
Lattice degeneration is a thinned, criss-crossed patch near the edge of the retina, found more often in nearsighted eyes. On its own it usually does not rule out LASIK. Depending on how it looks and whether there are holes or traction, your doctor may seal it with a laser first, or may simply watch it. That is a decision for an eye doctor who has seen your dilated retina.
Not always, but they always deserve a prompt call. Floaters are common in nearsighted eyes and often come from the gel inside the eye pulling away, which is a normal age-related change. The problem is that you cannot tell a harmless floater from a tear by looking. About 14 of every 100 people who show up with sudden floaters or flashes turn out to have a retinal tear, so the exam decides, not your guess.
Say three things: what you see, when it started, and that you have had LASIK for nearsightedness. Describe symptoms plainly, such as new flashing lights, a swarm of floaters, or a curtain from one side. Ask whether an eye doctor can examine your dilated retina, since a general emergency room may not have that equipment. If not, ask them to arrange an eye exam the same day.
Bringing a short list makes an appointment far more useful. Consider asking:
- What is my prescription, and does it count as strong nearsightedness?
- Was my retina examined with my eyes dilated, and what did you see at the edges?
- Do I have any lattice degeneration, thin areas, or old tears, and do they need treatment first?
- Given my retina, does LASIK change anything about my long-term risk?
- How often should I have a dilated eye exam after surgery?
- Who do I call, day or night, if I see flashes, floaters, a shadow, or a curtain?
- American Academy of Ophthalmology (EyeSmart) (2024). Detached Retina.
- Hollands H, Johnson D, Brox AC, Almeida D, Simel DL, Sharma S. JAMA 2009;302(20):2243-2249, systematic review of 17 studies (PubMed 19934426) (2009). Acute-onset floaters and flashes: is this patient at risk for retinal detachment?.
- American Academy of Ophthalmology, Preferred Practice Pattern (2024). Posterior Vitreous Detachment, Retinal Breaks, and Lattice Degeneration Preferred Practice Pattern (2024).
- American Academy of Ophthalmology, Preferred Practice Pattern (2024). Refractive Surgery Preferred Practice Pattern (2022, updated 2024).
- Arevalo JF, Lasave AF, Torres F, Suarez E. Graefes Arch Clin Exp Ophthalmol 2012;250(7):963-970 (PubMed 22218710) (2012). Rhegmatogenous retinal detachment after LASIK for myopia of up to -10 diopters: 10 years of follow-up.
- American Academy of Ophthalmology (EyeSmart) (2026). LASIK, Laser Eye Surgery.
- National Eye Institute (NEI), National Institutes of Health (2024). Retinal Detachment.
- Ludwig CA, Vail D, Al-Moujahed A, et al. Scientific Reports 2023;13:9430 (PMC10256775) (2023). Epidemiology of rhegmatogenous retinal detachment in commercially insured myopes in the United States.
- Lauzirika G, Garcia-Gonzalez M, Bolivar G, et al. Translational Vision Science & Technology 2021;10(3):9 (PMC7961108) (2021). Measurement of the Intraocular Pressure Elevation During Laser-Assisted In Situ Keratomileusis Flap Creation Using a Femtosecond Laser Platform.
- Al-Rashaed S, Al-Halafi AM. Middle East African Journal of Ophthalmology 2011;18(3) (PMC3162735) (2011). Retinal Detachment After Laser In Situ Keratomileusis.
- U.S. Food and Drug Administration (FDA), LASIK device program (2018). When is LASIK not for me?.