Double vision after LASIK usually lasts for a few days to a few weeks, depending on individual healing processes.
While it’s a common post-surgery symptom, it typically resolves as your eyes recover and adjust.
Understanding the duration and causes of double vision following LASIK can help patients manage expectations during recovery. This guide explains what double vision is, why it occurs after LASIK, and how to handle it properly. Here’s everything you need to know about this temporary issue.
What Causes Double Vision After LASIK Surgery?
Double vision, or diplopia, can sometimes occur after LASIK surgery due to the natural healing and adjustment process of your eyes. In most cases, this effect is temporary and typically monocular, caused by corneal irregularities rather than issues with neurological or muscular function. Below, we delve into some of the most common causes:
1. Corneal Healing
After LASIK, the cornea (the clear outer layer of your eye) begins healing from the reshaping process. During this time, the surface of your cornea may be uneven, which can temporarily distort how light enters your eye, resulting in double vision.
2. Dry Eyes Post-Surgery
Dry eyes are among the most common side effects of LASIK and can also contribute to double vision. When your eyes lack adequate tears, the surface becomes irregular, impacting how light is refracted through the cornea. LASIK temporarily reduces tear production, but this typically subsides as the eyes heal.
3. Inflammation and Swelling
Swelling in the cornea due to the surgery can cause haziness or ghosting in vision. This inflammation is a natural part of the healing process and usually dissipates within days or weeks, along with any double vision.
4. Eye Misalignment
LASIK does not directly affect the muscles that control eye movement. However, in some cases, it can unmask pre-existing issues like strabismus or poor binocular fusion that were previously compensated for. As the eyes adjust to clearer vision post-surgery, this can occasionally result in temporary image mismatch or double vision.
5. Surgical Adjustments
Laser reshaping alters the corneal tissue to improve vision. While some patients may experience over- or under-correction during the initial healing period, this usually causes blurry or fluctuating vision rather than true double vision. Temporary diplopia is more likely when such refractive discrepancies are combined with factors like irregular astigmatism, decentered ablation, or binocular vision imbalances.
How Long Does Double Vision Last?
The recovery timeline for double vision after LASIK varies depending on individual factors, including the extent of correction performed, overall eye health, and how your body heals. Here’s a breakdown of the expected timeline:
First Few Days
- What to Expect: Many patients report double vision immediately after the procedure. This is most noticeable on the first day or during nighttime due to light scatter and glare from healing tissues.
- Improvement: Double vision often reduces significantly within 24–48 hours as the cornea heals and swelling subsides.
Within the First Week
- By the end of the first week, most LASIK patients no longer experience noticeable double vision. Symptoms like halos or glare at night may still persist, but typically improve over time. It’s important to note that halos and starbursts are not true double vision—they are light scatter artefacts caused by healing corneal surfaces or refractive effects, not misalignment or duplication of images.
Within 2–4 Weeks
- The majority of patients will see significant recovery within two to four weeks. Residual double vision might persist slightly when tired, in dim lighting, or in specific focusing situations.
After 1–3 Months
- For those with prolonged healing or advanced prescriptions corrected during LASIK, double vision may linger up to three months. Persistent cases should be monitored closely by your surgeon.
- If double vision persists beyond three months, consult your ophthalmologist to rule out complications or discuss further corrective solutions.
For most, double vision is temporary and not a cause for concern when LASIK aftercare guidelines are followed correctly.
Managing Double Vision During Recovery
While your eyes naturally heal, there are steps you can take to make recovery smoother and more comfortable. Here are practical tips that help reduce and manage double vision after LASIK:
1. Use Prescribed Eye Drops
Artificial tears and medicated eye drops are your best defence against post-surgery dry eyes and inflammation. Use them as directed by your doctor to maintain a smooth, hydrated corneal surface and avoid visual distortion.
2. Rest Your Eyes
Avoid prolonged screen time or activities requiring intense focus (like reading fine print) during the first week after surgery. Resting your eyes reduces strain and supports the healing process.
3. Wear Protective Eyewear
Protective goggles or eyewear prevent accidental rubbing and shield your eyes from dust or irritants that can interfere with healing. This is especially important during sleep to avoid disrupting the healing cornea.
4. Create a Relaxing Environment for Your Vision
Reduce exposure to harsh lighting or glare, especially in the evenings. Dimming lights and avoiding bright screens can prevent discomfort and minimise visual distortions.
5. Follow Up with Your Surgeon Regularly
Attend all scheduled post-surgery checkups. If double vision worsens or persists beyond a standard time frame, your doctor can determine if additional treatment is necessary.
6. Stay Hydrated
Dehydration can worsen dry eyes and affect corneal stability. Drink plenty of water and maintain a balanced diet rich in omega-3 fatty acids, which support tear production.
When Should I Be Concerned About Double Vision?
While double vision is expected immediately after LASIK, certain signs may indicate complications that require medical attention. Please contact your surgeon without delay if you experience any of the following:
- Double vision lasting more than three months without improvement.
- Sudden onset of severe pain or discomfort.
- Increasing redness or swelling in the eyes.
- Significantly reduced vision or complete loss of focus.
- Persistent halos or starbursts around lights at night, worsening over time.
While complications are rare, addressing concerns early ensures the best outcome and peace of mind.
Tips to Avoid Prolonged Double Vision After Surgery
Proper pre- and post-surgery care gives you the best chance of a smooth LASIK recovery and reduces the likelihood of prolonged double vision. Here are some essential steps:
- Choose a reputable LASIK surgeon with a proven success rate and patient satisfaction.
- Follow all pre-surgery guidelines, such as stopping contact lens usage to allow your corneas to stabilise.
- Adhere to the post-surgery care plan, including avoiding strenuous activity or eye rubbing.
- Report any pre-existing eye conditions or medical history to your doctor before the procedure.
With proper precautions, most LASIK patients enjoy clear, stable vision without lasting discomfort.
What If Double Vision Persists?
While rare, if double vision remains beyond the typical recovery window, your doctor may explore the following solutions:
- Enhancement Surgery – A follow-up LASIK procedure corrects residual vision imperfections.
- Prism Glasses – Temporary corrective lenses can help align your visual focus during healing.
- Contact Lenses – Specialised contact lenses correct any corneal irregularities causing lingering double vision.
- Referral to a Specialist – For unique or complex cases, a referral to an optometrist or neuro-ophthalmologist may be required.
These solutions ensure that prolonged double vision is addressed comprehensively, further reassuring you of LASIK’s lasting benefits.
Recover Your Vision with Confidence
Double vision after LASIK can be slightly unsettling, but it is typically a normal part of the healing process. By following your surgeon’s advice, managing symptoms effectively, and being patient with your body’s recovery, you can enjoy clear, corrective vision without complications.
Still have questions about post-LASIK recovery? Reach out to your surgeon for guidance or consult your healthcare provider for tailored recommendations.