Strabismus Surgery Risks: An Honest Look From a Patient

The night I finally searched for strabismus surgery risks, I scared myself so badly that I closed the laptop and did not look again for two months. That was a mistake, but not for the reason you might think. The mistake was not reading too much. It was reading without context.

Every surgery has risks, and the honest lists look frightening when you do not know how likely each item is or what it actually means for daily life. I eventually went through with surgery, my outcome was excellent, and today I want to give you the version of the risk conversation I wish I had found that first night. Honest, complete, and calm.

Let me be clear up front: I am not a doctor, nurse, or medical professional of any kind. What follows is a patient’s understanding, and you must review your personal risks with a qualified ophthalmologist, because your case is not my case.

The Common Stuff: Temporary and Expected

Most of what happens after strabismus surgery is not a complication at all. It is normal healing, and knowing what is coming makes it far less alarming.

Red Eyes

Your eye will be red where the surgeon worked. Not slightly pink. Red. Mine looked dramatic in the first weeks, especially on the sides of the eye where the surgeon had worked on the muscles. The redness comes from the small blood vessels on the white of the eye and it fades gradually, often over a few weeks, sometimes lingering faintly a bit longer.

Nobody warned me how red it would be, so I am warning you now. It looks worse than it feels, and it goes away.

Discomfort, Discharge, and Sticky Mornings

For the first week, moving my eye to the sides felt strange and uncomfortable while the muscles healed, though looking straight ahead was fine, and I would rate the pain at only about 3 out of 10. The bigger daily annoyance was the discharge: my eye produced a jelly-like substance instead of normal tears, and every morning began with carefully cleaning sticky eyelids before the eye would open properly. It sounds alarming, but it is normal healing, and the prescribed drops plus patience carried me through. After that first week, the discomfort faded into background noise.

Temporary Double Vision

This is the one that worried me most beforehand. When the eye moves to a new position, the brain has spent years or decades wired for the old position, and it can take time to recalibrate. Many adults see some double vision in the early days after surgery.

In my own case it never became a real problem, what I mostly noticed was that moving the eye felt strange while everything settled, but experiences vary widely, and for most people any early double vision resolves within days to weeks. Persistent double vision does happen to a small minority, and it is a key topic for your pre-surgery conversation. I go much deeper into how it works and how it is treated in my guide to strabismus and double vision.

Overcorrection and Undercorrection

Here is the risk that deserves the most attention, because it is the most realistic one: the surgery may not land the alignment exactly on target.

• Undercorrection means some of the original drift remains after healing
• Overcorrection means the eye now drifts the opposite way, past straight

Surgeons plan the muscle adjustments from careful measurements, but every eye heals differently, so results land within a range. Most patients get a satisfactory alignment from one operation, while a meaningful minority need glasses with prisms, a period of observation, or a second procedure to fine-tune the result. There is also the separate, longer-term risk of a well-aligned eye drifting again years down the road, which I explore in can strabismus come back after surgery.

My surgeon was refreshingly honest about this. My deviation was large, around 60 prism diopters, and I had lived with exotropia since I was 10, so she told me plainly that success was not guaranteed, my brain had adapted to seeing a certain way for a long time, and there was no certainty it would readjust. Hearing that beforehand meant that if I had needed a touch-up, it would have felt like part of the plan rather than a failure. Some surgeons also use adjustable sutures in adults, tightening or loosening the correction shortly after surgery, which is worth asking about; mine used standard fixed sutures.

For what it is worth, my own alignment came out essentially straight and has stayed that way. But I walked in prepared for the other outcome, and that preparation was a gift to my own nerves.

The Rare Serious Risks, Discussed Responsibly

Informed consent means your surgeon must tell you about serious complications even when they are very unlikely. This is the part of the list that frightened me that first night, so let me handle it the way my surgeon eventually did: name them, put them in proportion, and move on.

The medical literature describes rare complications including infection, bleeding, a slipped or detached muscle, perforation of the eye wall, and in extremely rare cases problems that can threaten vision. These are consistently described as occurring in a very small fraction of surgeries, and eye muscle surgery does not enter the eyeball itself in the way cataract or retina surgery does, since the muscles sit on the outside of the eye.

For a sense of scale, the most common way this surgery falls short is not a dramatic complication at all but simply needing a second procedure, and even that happens to only about 5.6 percent of patients within one year and about 10 percent within five years, according to a large analysis of the IRIS Registry (source). The serious complications listed above are rarer still, and I walk through the fuller outcome numbers in my article on the strabismus surgery success rate in adults. Beyond the statistics, one thing helped me more than anything: when I asked my surgeon directly how often she had seen serious complications across her career, her answer was calming in a way no number online had been. Ask your surgeon the same question. Their firsthand answer, about their own hands, is the number that actually applies to you.

Anesthesia

Adults usually have strabismus surgery under general anesthesia, and the operation is relatively short. Anesthesia carries its own small risks, which is why an anesthesia team reviews your health history, medications, and allergies beforehand. For a generally healthy adult, these risks are widely considered low, and I found the routine pre-op questions on surgery day, allergies, conditions, medications, genuinely reassuring in their thoroughness. Being honest on that health questionnaire is one of the simplest things you can do to protect yourself.

How I Processed the Fear

I want to be honest about the emotional side, because no risk list captures it. For a stretch of weeks I cycled between two thoughts: people do this every day and it is fine, and then, but what if I am the rare case? Some nights the second thought won.

Three things moved me from fear to informed calm:

• Writing every scary question down and asking my surgeon all of them, out loud, from a printed list
• Talking to other adults who had the surgery, whose lived experience put the risk lists in human proportion
• Comparing the risks of acting against the certainty of not acting

That last point was the turning point. The risks of surgery were possibilities, most of them small and most of them temporary. The cost of my drifting eye was a certainty I paid daily: avoiding eye contact in meetings, angling my face in photos, the low hum of self-consciousness in every first impression. I stopped asking whether surgery was risky and started asking whether it was riskier than many more years of that. I unpack that whole calculation in is strabismus surgery worth it, and for the full picture of the condition itself, my complete guide to adult strabismus is the place to start.

If the fear of complications is the thing keeping you stuck, I offer a free 30-minute consultation where you can ask me anything about how I sat with that fear and worked through it. I am not a doctor and cannot assess your risks, but I know exactly what the 2 a.m. worry spiral feels like, and sometimes talking to someone who came out the other side is what finally quiets it.

How to Talk About Risks With Your Surgeon

The risk conversation with your surgeon is where generic internet lists become your personal numbers. Here is how to get the most out of it:

• Ask them to walk you through the consent form line by line, not just hand it to you
• Ask which risks are most relevant to your specific case and measurements
• Ask how often they personally see each complication in their own practice
• Ask what the plan would be if overcorrection, undercorrection, or persistent double vision happened to you
• Ask what symptoms after surgery should prompt an immediate call

A surgeon who answers these patiently is a surgeon you can trust on the table. One who waves them off is telling you something important. I keep a full printable list in my free tool, questions for your surgeon, and I genuinely recommend bringing it to your appointment, because nerves have a way of deleting your memory the moment you sit in that exam chair.

Why I Still Chose Surgery

After all the reading and all the questions, my decision came down to a simple ledger. On one side: a short operation with mostly temporary effects, a modest chance of needing a touch-up, and rare serious risks my surgeon had almost never seen. On the other: guaranteed, daily, compounding costs to my confidence for the rest of my life.

I chose surgery, and the week my eyes were at their reddest, I never once regretted it. The redness faded. The soreness faded. The double vision faded. What remained was a pair of straight eyes and the strange new luxury of holding someone’s gaze without a single background thought about my own face.

Your ledger may balance differently, and that is legitimate. Some people’s risk profiles are higher, some people’s daily burden is lower, and only you and a qualified ophthalmologist can weigh yours. But do the weighing with real information and a surgeon you trust, not with a 2 a.m. search spiral. That version of me deserved better, and so do you.

Frequently Asked Questions

What are the most common side effects of strabismus surgery?

The most common effects are temporary: red eyes, soreness, a gritty or foreign body feeling, light sensitivity, and sometimes double vision while the brain adjusts. For most patients these fade over days to weeks and are managed with lubricating drops and rest.

How common is double vision after strabismus surgery?

Temporary double vision is fairly common in adults as the brain adapts to the new eye position, and it usually settles within days to weeks. Persistent double vision is much less common, which is exactly why you should discuss your personal risk with your surgeon before deciding.

What is overcorrection in strabismus surgery?

Overcorrection means the eye ends up drifting past straight in the opposite direction, while undercorrection means some of the original drift remains. Small residual misalignments are relatively common and are often observed, treated with prisms, or addressed with a second procedure if needed.

Can strabismus surgery make you blind?

Vision-threatening complications are described in the medical literature as very rare. Surgeons are required to mention them during informed consent, but they occur in a very small fraction of cases, and this is a question worth asking your own ophthalmologist directly.

Is anesthesia for strabismus surgery risky?

Adults typically receive general anesthesia, which carries the same small risks as anesthesia for other short elective procedures. An anesthesia team reviews your health history beforehand, and for generally healthy adults these risks are widely considered low.

Might I need a second strabismus surgery?

Possibly. Reoperation is a known part of strabismus care because eye alignment can drift over time or the first procedure may not fully correct it. Many patients get lasting results from one surgery, but going in aware of the possibility keeps expectations realistic.

Tagged: surgery riskscomplicationsbefore surgeryadult strabismus