Fever after LASIK is uncommon and usually not caused by the surgery itself, but it can signal an underlying infection or unrelated illness that needs attention.
If you develop a fever following LASIK, it’s important to know when to monitor your symptoms at home and when to contact your eye surgeon or primary care doctor. This guide explains why fever after LASIK can happen, what it might mean for your recovery, and how to respond if you experience this symptom.
Is Fever a Normal Side Effect After LASIK?
LASIK (Laser-Assisted In Situ Keratomileusis) is a highly effective and safe procedure for correcting vision, but like any surgery, it can cause some mild discomfort as your eyes heal. Fever, however, is not a typical side effect of LASIK. Most patients experience temporary dryness, mild irritation, or sensitivity to light, but body temperature usually remains normal.
If you notice a fever (temperature above 100.4°F or 38°C) after your procedure, it’s important to consider both eye-related and general health causes.
Common Causes of Fever After LASIK
1. Coincidental Viral or Bacterial Infection
Most fevers after LASIK are unrelated to the surgery itself. You may have caught a cold, flu, or other infection around the time of your procedure. Symptoms like sore throat, cough, body aches, or nasal congestion point to a general illness rather than a LASIK complication.
2. Postoperative Eye Infection (Rare)
Although uncommon, eye infections can occur following LASIK. Signs of an eye infection include:
- Redness, pain, or swelling around the eye
- Pus or unusual discharge
- Decreased vision or sudden blurriness
- Sensitivity to light
- Fever (in severe cases)
Immediate treatment is crucial to avoid vision loss if an infection develops.
3. Inflammatory Response
A mild inflammatory response is normal after LASIK, but this does not typically cause fever. However, in rare instances, a more serious inflammatory reaction—like diffuse lamellar keratitis (DLK)—can develop. This usually presents as eye discomfort, blurred vision, and light sensitivity, not systemic fever.
4. Medication Reaction
Some people may react to medications prescribed after LASIK, such as antibiotics or steroid eye drops. Allergic reactions or side effects can rarely cause fever, rash, or other symptoms.
What to Do If You Have a Fever After LASIK?
Step 1: Assess Your Symptoms
- Is your fever mild or high?
- Do you have other symptoms, such as chills, cough, sore throat, or body aches?
- Are you noticing eye pain, redness, discharge, or changes in your vision?
Step 2: Monitor Your Eye Health
If your eyes feel comfortable and you have no concerning symptoms, your fever is likely unrelated to LASIK. Rest, hydrate, and monitor your temperature.
Step 3: Watch for Red Flags
Reach out to your eye surgeon or doctor right away if you experience:
- Severe or increasing eye pain
- Redness, swelling, or discharge from the eye
- Blurred or decreased vision
- Persistent or high fever (above 102°F or 39°C)
- Signs of systemic infection (rash, confusion, difficulty breathing)
Step 4: Follow Medical Advice
Your doctor may recommend:
- An in-person eye exam to rule out infection
- Blood tests or cultures if a systemic infection is suspected
- Adjusting or stopping certain medications if a reaction is suspected
Preventing Infection and Complications After LASIK
Follow Postoperative Instructions
- Use all prescribed eye drops as directed (antibiotics, steroids, lubricants).
- Avoid touching or rubbing your eyes.
- Keep your hands clean before applying drops or touching your face.
- Wear protective eyewear as advised, especially while sleeping.
Avoid High-Risk Environments
- Stay away from dusty, dirty, or crowded places during the first week.
- Don’t swim or use hot tubs until cleared by your doctor.
- Avoid sick contacts if possible, especially in the days after surgery.
Prioritise General Health
- Get plenty of rest before and after surgery.
- Drink plenty of water and maintain a healthy diet to aid your recovery.
- Address any signs of illness promptly.
How Common Are Infections After LASIK?
Eye infections after LASIK are very rare, occurring in less than 1 in 5,000 cases. Most are mild and resolve with prompt treatment. Serious infections are even less common, especially when patients follow all postoperative instructions.
Systemic infections (such as respiratory or gastrointestinal illnesses) are not caused by LASIK, but can occur coincidentally. Fever from these causes is managed as it would be outside of surgery.
Practical Tips for LASIK Recovery and Fever Prevention
- Rest well before and after your procedure.
- Follow your doctor’s medication and hygiene instructions.
- Avoid rubbing your eyes or exposing them to irritants.
- Stay away from sick contacts and crowded places during early recovery.
- Call your surgeon promptly if you have concerns.
When to Seek Immediate Medical Attention?
- Sudden, severe eye pain or vision loss
- Persistent fever above 102°F (39°C)
- Redness, swelling, or pus from the eye
- Difficulty breathing, chest pain, or confusion
Timely treatment helps avoid complications and safeguards your vision.
Staying Safe and Healthy After LASIK
Fever after LASIK is rare and usually unrelated to the surgery, but it should never be ignored.
Keep track of your symptoms, follow your surgeon’s guidance, and consult a doctor if you have any concerns about your eyes or overall health. With proper care and attention, most people recover quickly from LASIK and enjoy clear, comfortable vision for years to come. If you have questions about recovery or unusual symptoms, don’t hesitate to reach out to your eye care team—they’re there to help you every step of the way.
Frequently Asked Questions About Fever After LASIK
Is it normal to feel tired or run-down after LASIK?
Mild fatigue is common after any procedure, especially if you’re anxious or didn’t sleep well before surgery. True fever is not expected.
Can I take fever-reducing medications after LASIK?
Yes, you can take acetaminophen (paracetamol) or ibuprofen for fever or discomfort, unless your doctor advises otherwise. Always check before combining with other medications.
Should I delay LASIK if I have a cold or fever?
Yes, it’s best to reschedule your procedure if you are unwell. Surgery should be done when you’re healthy for optimal healing and comfort.
What if I develop a fever a week after LASIK?
If your eyes feel fine and you have typical cold or flu symptoms, treat it as you would any other illness. If you notice eye pain, redness, or vision changes, call your surgeon.
