Introduction

If you’re planning LASIK, you’ve probably focused on the big milestones—booking your consultation, arranging recovery time, and imagining life without glasses or contact lenses. But there’s a small detail that can make or break your surgical results: when to stop wearing your contacts before your pre-surgery exam.

At first, it might seem like a minor step. After all, you’ve worn lenses for years—why would a few more days matter? But in refractive surgery, every fraction of a millimeter counts. Contact lenses, especially rigid ones, can subtly reshape your cornea, and those changes can linger long after you take them out. If we measure your eyes while they’re still under that influence, your LASIK plan might be based on inaccurate data.

At Jryn Eye Clinic in Busan, we see this as one of the most important parts of preparation. It’s not about being strict—it’s about giving your eyes the time they need to return to their natural shape so your surgery is tailored to you, not to your lenses.

Why Contact Lenses and LASIK Don’t Mix—Right Before Surgery

To understand why this step is so important, you need to know a little about how LASIK works.

LASIK (and SMILE LASIK, which we also perform here in Busan) reshapes your cornea using a laser to correct your refractive error—whether it’s myopia, hyperopia, or astigmatism. The success of that reshaping depends on having the most accurate corneal measurements possible.

The problem?

• Contact lenses change your corneal curvature.
  Even soft lenses apply slight pressure and can alter the way your cornea sits.

• Rigid lenses change it even more.
  Gas-permeable (RGP) or hard contacts create a more significant molding effect—sometimes enough to cause inaccurate corneal topography readings for weeks after you stop wearing them.

This change is temporary, but it’s enough to throw off the ultra-precise mapping we rely on for your treatment plan. And LASIK planning is like navigation—being just a few millimeters off at the start can put you far off course at the end.

How Long Before LASIK Should You Stop Wearing Contacts?

The “contact lens holiday” isn’t a suggestion—it’s part of safe and effective LASIK preparation. Here’s what we recommend:

For soft contact lenses:

• Stop wearing them at least 1–2 weeks before your pre-op exam.

• If you have high prescriptions or significant astigmatism, sometimes we recommend a little longer.

For RGP or hard lenses:

• Stop wearing them 3–4 weeks before your pre-op exam.

• If you’ve worn them for many years (especially daily for 8–10+ hours), you may need up to 6 weeks for your cornea to fully stabilize.

Why the difference?

Soft lenses are like pressing lightly on a pillow—remove the pressure and the pillow bounces back fairly quickly. Hard lenses are more like placing a heavy object on a pillow for years—it takes longer for the shape to return to normal.

What Happens During the “No Lens” Period

Some patients think this time is just about “not wearing contacts.” In reality, three important things are happening:

1. Your cornea returns to its natural shape.
   This ensures the laser reshaping will be perfectly matched to your true eye anatomy—not an artificial one.

2. Your tear film stabilizes.
   Contact lenses can disrupt the normal tear layer of your eyes, leading to dryness. LASIK outcomes are better when the tear film is healthy at the time of surgery.

3. We get more accurate diagnostic scans.
   Corneal topography, wavefront analysis, and pachymetry all depend on an unaltered eye surface. If the data is wrong, your treatment plan will be wrong.

What If You Don’t Stop Wearing Contacts?

Skipping the “contact lens holiday” can cause several problems:

• Inaccurate corneal maps → leading to overcorrection or undercorrection.

• Higher risk of visual side effects like halos, glare, or ghost images.

• Greater chance of needing enhancement surgery later.

From a surgeon’s perspective, this is one of the easiest risks to avoid. The few weeks of inconvenience can save you from months of frustration.

Patient Story: How One Week Made a Difference

A patient we’ll call Mr. K came to us for LASIK evaluation. He wore rigid gas permeable lenses for over 20 years and had only stopped wearing them 7 days before his pre-op exam.

His first corneal scan showed irregular curvature—something we don’t expect in healthy corneas. When we re-measured after just two more weeks without lenses, his scans were completely different. If we had based his LASIK plan on the first measurement, his result would have been far from optimal.

A Doctor’s Perspective

Dr. Han Sang Yeop often explains it this way:

“LASIK is a precision procedure, down to microns. A small corneal shape change from a contact lens can be the difference between perfect vision and needing glasses again. You wouldn’t measure for custom eyeglasses while your current glasses are still on—this is the same principle.”

Tips for Getting Through the “No Lens” Period

We understand—going back to glasses can feel inconvenient, especially if you’ve been a contact lens wearer for years. Here are a few tips from our patients:

• Get a comfortable, up-to-date glasses prescription before you stop lenses.

• Plan your contact lens break during a less busy time—like vacation or remote work days.

• Use lubricating eye drops if your eyes feel dry without lenses.

• Remind yourself it’s temporary—just a few weeks for years of clear vision ahead.

What About SMILE LASIK or ICL?

Some patients ask whether the “no contact lens” rule applies if they’re getting SMILE LASIK or EVO ICL (Implantable Collamer Lens) instead of traditional LASIK. The answer is yes.

• SMILE LASIK still requires precise corneal measurements for accurate femtosecond laser programming.

• EVO ICL doesn’t reshape the cornea, but we still need your natural corneal curvature for accurate sizing and vaulting of the lens.

In short: the principle applies across all refractive procedures.

How Jryn Eye Clinic Approaches This Step

At Jryn Eye Clinic in Busanjin-gu, we:

• Give each patient a personalized contact lens break timeline based on lens type, wearing history, and corneal stability.

• Perform repeat scans if there’s any doubt that the cornea has returned to baseline.

• Use multi-device confirmation—corneal topography, Scheimpflug imaging, and wavefront aberrometry—to ensure accuracy before surgery.

We’ve built our reputation on precision and safety, and we’d rather delay surgery by a week than proceed with imperfect measurements.

The Bottom Line

Stopping contact lens wear before LASIK is not just a technicality—it’s a critical part of ensuring you get the best possible outcome.

• Soft lenses: 1–2 weeks before pre-op exam

• RGP/hard lenses: 3–4+ weeks before pre-op exam

• Longer if you’ve worn hard lenses for many years

Think of it as clearing the stage before the performance. The laser is the star, but the preparation sets the scene for success.

Conclusion: A Few Weeks for a Lifetime of Clear Vision

If you’re about to take the step toward LASIK or SMILE LASIK, give your eyes the gift of a proper rest from contact lenses. The short-term inconvenience of glasses is nothing compared to the decades of crisp, uncorrected vision you could enjoy afterward.

At Jryn Eye Clinic, we believe every detail matters—from the advanced lasers we use to the weeks of careful preparation before we even enter the surgery room.

So, before your LASIK journey begins, put those contacts away. Let your eyes return to their natural state. And when you step into our clinic for your procedure, we’ll have the most accurate blueprint possible—ready to give you the vision you’ve been dreaming of.