LASIK eye surgery is one of the most popular and successful vision correction procedures in the world. Millions of people have achieved clear vision without glasses or contact lenses thanks to this advanced laser technology. However, like any surgical procedure, it is important to understand the potential complications of LASIK eye surgery before moving forward.
At Cali Eye Institute, led by Dr. Babak Shabatian, we believe that informed patients make the best decisions. While LASIK has a very high satisfaction rate, knowing the possible risks, warning signs, and treatment options can help protect your long-term eye health
Understanding LASIK Eye Surgery
LASIK (Laser-Assisted In Situ Keratomileusis) works by reshaping the cornea, the clear, curved surface at the front of the eye, so that light focuses correctly on the retina. When the cornea bends light properly, vision becomes sharper and clearer.
Refractive errors such as:
- Nearsightedness (myopia)
- Farsightedness (hyperopia)
- Astigmatism
can cause light to focus incorrectly, leading to blurred or distorted vision. LASIK corrects these issues by precisely altering the corneal shape.
As discussed in our previous blog on whether you can have LASIK twice, proper corneal health and stability are critical not only for success, but also for avoiding complications.
Are Complications of LASIK Eye Surgery Common?
The good news is that serious complications of LASIK eye surgery are rare. Studies consistently show that over 95% of patients are satisfied with their results. However, mild to moderate side effects can occur, especially in the early healing phase.
Understanding the difference between normal post-LASIK symptoms and true complications is key.
8 Potential Complications of LASIK Eye Surgery
1- Dry Eye Syndrome
Dry eye syndrome is the most common complication after LASIK, affecting up to 60–70% of patients temporarily. Symptoms usually improve as the corneal nerves heal over time.
Why it happens:
LASIK disrupts corneal nerves that help regulate tear production, leading to reduced or unstable tears during the healing period.
Common symptoms include:
- Burning or gritty sensation
- Redness and irritation
- Fluctuating or blurry vision
Treatment options:
Artificial tears, prescription eye drops, omega-3 supplements, and in more severe cases, punctal plugs may be used to relieve symptoms.
Patients with pre-existing dry eye should be carefully evaluated, as LASIK can worsen dryness, an important consideration in LASIK candidacy discussion.
2- Visual Aberrations (Halos, Glare, Starbursts)
Some patients may experience halos, glare, or starbursts around lights, particularly at night or in dim environments. These visual disturbances are most noticeable during activities such as night driving.
These side effects typically:
- Improve within 3–6 months as the eyes heal and adapt
- Are more pronounced in low-light conditions, when the pupil naturally dilates
With advanced preoperative screening and modern laser technology, the risk and severity of these visual aberrations have been significantly reduced for most patients.
3- Flap Complications (Folds or Striae)
During LASIK, a thin corneal flap is created to reshape the underlying cornea. If this flap does not heal smoothly or shifts slightly during the early healing period, flap folds, known as striae, may develop.
- Macrostriae: Larger, more visible folds that can distort vision and cause blurriness or ghosting
- Microstriae: Very fine folds that are often asymptomatic and may only be seen during an eye examination
When identified early, striae can usually be managed with simple flap repositioning or smoothing, allowing the cornea to heal properly and preventing long-term visual problems.
4- Flap Dislocation
Although rare, flap dislocation is a potential complication of LASIK. It can occur even years after surgery, most commonly as a result of direct eye trauma, accidental rubbing, or injury. While uncommon, flap dislocation can lead to discomfort, blurred vision, or other visual disturbances if not addressed promptly.
This underscores the importance of careful post-operative care and protective measures, particularly during the first few weeks after surgery when the corneal flap is most vulnerable. Wearing protective eyewear during sports or risky activities, avoiding eye rubbing, and following all postoperative instructions are key to minimizing this risk and ensuring long-term visual stability.
5- Diffuse Lamellar Keratitis (DLK)
Diffuse Lamellar Keratitis (DLK) is an inflammatory reaction that occurs beneath the corneal flap, typically within the first few days after LASIK surgery. It is sometimes referred to as “sands of the Sahara” because of the fine granular appearance of inflammatory cells under the flap.
Symptoms may include:
- Blurry or hazy vision
- Increased light sensitivity
- Redness or mild discomfort
Although DLK can sound alarming, when detected and treated early, usually with topical anti-inflammatory eye drops, it almost always resolves without causing permanent vision problems. Prompt diagnosis and close follow-up are essential, as severe or untreated cases can lead to scarring or vision changes. Early intervention ensures the cornea heals properly and helps maintain optimal visual outcomes after LASIK.
6- Pressure-Induced Stromal Keratitis (PISK)
Pressure-Induced Stromal Keratitis (PISK) is a rare but serious inflammatory condition that can occur after LASIK, often associated with elevated intraocular pressure. Unlike typical post-LASIK inflammation, PISK is driven by pressure changes beneath the corneal flap rather than infection.
Symptoms may include:
- Eye pain or discomfort
- Redness and irritation
- Blurry or fluctuating vision
Because PISK can progress quickly and potentially cause permanent visual changes, prompt diagnosis and treatment are critical. Management usually involves lowering the eye pressure with medications and careful monitoring to prevent damage to the cornea or optic nerve. Early recognition and intervention are key to preserving long-term vision and ensuring a safe recovery after LASIK.
7- Infectious Keratitis (Corneal Infection)
Although extremely uncommon, infection is one of the most serious complications that can occur after LASIK eye surgery. Infections can develop beneath the corneal flap or on the surface of the eye, and if not treated promptly, they have the potential to cause permanent vision loss.
Warning signs to watch for include:
- Increasing eye pain that does not improve with standard post-op care
- Discharge from the eye, which may be cloudy or pus-like
- Worsening or rapidly declining vision
- Swelling, redness, or unusual irritation around the eye
Immediate medical attention is essential if any of these symptoms appear. Treatment typically involves prompt administration of topical or oral antibiotics or antivirals, depending on the cause of the infection. Early detection and aggressive management are crucial to protect the cornea, preserve vision, and ensure the long-term success of LASIK surgery.
8- Epithelial Ingrowth
Epithelial ingrowth is a complication that occurs when surface cells from the cornea migrate underneath the LASIK flap during the healing process. While it is relatively uncommon, it can sometimes lead to visual disturbances or discomfort if left untreated.
Potential effects include:
- Blurred or hazy vision
- Localized inflammation under the flap
- Irregular astigmatism, which can distort vision
Management depends on the severity:
- Mild cases are often monitored closely, as they may remain stable without intervention
- Advanced or progressive cases may require lifting the flap and carefully removing the ingrown cells to restore normal healing and prevent long-term visual problems
Early detection during postoperative follow-up is important, as timely intervention can preserve vision and prevent complications, ensuring optimal outcomes after LASIK surgery.
Rare LASIK Complications
In fewer than 0.1% of cases, LASIK may be associated with:
- Retinal detachment
- Optic nerve complications
- Vitreous hemorrhage
These are typically linked to underlying eye conditions rather than the LASIK procedure itself, reinforcing the importance of thorough pre-operative screening.
What Is the LASIK Failure or Complication Rate?
LASIK is considered one of the safest elective surgeries available. Importantly:
- Blindness caused by LASIK has never been documented
- 96% of patients report satisfaction with their results
- Most complications are temporary and treatable
As we’ve covered in previous articles about LASIK enhancements and alternatives like PRK, choosing the right procedure for your eyes is crucial.
How to Reduce the Risk of LASIK Complications
You can significantly reduce your risk of LASIK complications by taking a proactive and informed approach before and after surgery. Some key steps include:
- Choosing an experienced, qualified surgeon with a strong track record in LASIK procedures, as surgical skill and precision play a major role in outcomes.
- Disclosing your full medical and eye history, including conditions such as dry eye, autoimmune disorders, or previous eye injuries, so your surgeon can assess your candidacy accurately.
- Following all post-operative instructions carefully, including using prescribed eye drops, avoiding eye rubbing, and limiting activities that could strain or injure your eyes during the healing period.
- Attending all scheduled follow-up visits, which allows your surgeon to monitor healing, detect any early signs of complications, and address them promptly before they affect your vision.
By actively participating in your care and adhering to these recommendations, you greatly improve your chances of a safe procedure and excellent visual outcomes.
Why Choose Cali Eye Institute?
At Cali Eye Institute, Dr. Babak Shabatian provides personalized, evidence-based eye care using advanced diagnostic technology to maximize safety and outcomes.
We proudly serve patients across Southern California through our three locations:
- Cali Eye Institute – Torrance, CA
- Anacapa Vision – Ventura, CA
- Lancaster Eye – Lancaster, CA
All locations are part of the Cali Eye Institute network, ensuring consistent standards of care and expertise.
Final Thoughts on Complications of LASIK Eye Surgery
While complications of LASIK eye surgery are rare, being informed empowers you to recognize early warning signs and seek timely care. Most side effects are manageable, especially when addressed early by an experienced eye surgeon.
If you’re considering LASIK, or experiencing symptoms after surgery, we’re here to help.
Schedule a consultation with Cali Eye Institute today to discuss your vision goals and ensure the safest path to clear sight.
Frequently Asked Questions
Are serious complications like blindness common after LASIK?
Serious complications are extremely rare. Studies show that over 95% of patients are satisfied with their results, and blindness caused by LASIK has never been documented. Most side effects, such as dry eyes or night glare, are temporary and treatable during the healing phase.
What should I do if I notice "halos" or "starbursts" around lights after surgery?
Visual aberrations like halos and glare are common in the first 3 to 6 months as your eyes heal and adapt to their new shape. These are most noticeable at night when your pupils naturally dilate. If they persist beyond 6 months or significantly interfere with your vision, you should consult your surgeon to ensure the cornea is healing correctly.
Can the LASIK corneal flap become dislocated years after the procedure?
Yes, though it is rare. Flap dislocation can occur years later if the eye suffers direct trauma, such as a sports injury or accidental aggressive rubbing. This is why Cali Eye recommends wearing protective eyewear during high-risk activities even long after your recovery is complete.
What is "Epithelial Ingrowth" and how is it treated?
Epithelial ingrowth happens when surface cells of the cornea grow underneath the LASIK flap during healing. While many mild cases are simply monitored, more advanced cases can cause blurred vision or astigmatism. In these instances, a surgeon like Dr. Shabatian may lift the flap to carefully remove the cells and ensure the cornea heals smoothly.
Where can I find a LASIK specialist in Torrance or the South Bay area?
Cali Eye provides expert LASIK consultations and procedures at our Torrance, CA location. Led by Dr. Babak Shabatian, our Torrance office uses advanced diagnostic technology to evaluate your candidacy and provide personalized care for patients across the South Bay.
Does Cali Eye offer LASIK surgery and follow-up care in Ventura?
Yes. Patients in Ventura can visit our Anacapa Vision location, which is part of the Cali Eye network. We offer comprehensive preoperative screenings and postoperative follow-ups locally in Ventura, ensuring you receive consistent, high-standard care close to home.
Is there a Cali Eye location for LASIK consultations in the Antelope Valley?
Residents of the Antelope Valley can visit Lancaster Eye in Lancaster, CA. As a member of the Cali Eye Institute network, our Lancaster office provides the same evidence-based eye care and advanced technology available at our other Southern California loca