Introduction

Walk into any modern eye clinic in South Korea and you’ll hear the same question echo from exam room to exam room: "Is ICL safer than LASIK?" It’s a fair question—especially in a society that prizes technological precision and values long-term vision health. For patients in Busan and beyond, choosing between Implantable Collamer Lens (ICL) surgery and LASIK is more than a technical decision. It’s a deeply personal one, often rooted in anxiety about safety, long-term risks, and quality of life. At Jryn Eye Clinic in Busanjin-gu, we hear these concerns every day—and we want to set the record straight.

Dr. Han Sang Yeop, our clinic director with over two decades of ophthalmic surgical experience, puts it simply: "There is no one-size-fits-all answer. Safety depends not just on the procedure—but on the patient, the surgeon, and the technology used."

Let’s unravel the truth behind the most persistent myths surrounding ICL and LASIK safety, and help you make a confident, informed decision about your vision.

What’s the Real Difference Between LASIK and ICL?

Before diving into safety, it’s important to understand how each procedure works:

• LASIK (Laser-Assisted In Situ Keratomileusis) reshapes the cornea with a laser. A thin flap is created on the surface, then underlying corneal tissue is ablated to correct refractive error.
• ICL (Implantable Collamer Lens) places a synthetic lens inside the eye, between the iris and the natural lens. It doesn’t change the cornea—it adds a corrective lens that functions much like a contact lens from the inside.

While both can deliver 20/20 vision or better, they achieve it through fundamentally different means. And that means different safety profiles, too.

Myth #1: "ICL is Always Safer Than LASIK"

In a 2006 study comparing ICL and LASIK for moderate myopia, only 0.7% of ICL patients lost two or more lines of best-corrected vision—compared to 6% in the LASIK group at one week. However, this doesn’t automatically mean ICL is safer in the long run.

It’s also worth noting that long-term safety goes beyond visual acuity. It includes stability, the potential for retreatments, and compatibility with future eye conditions. For instance, patients in their 40s considering LASIK must account for upcoming presbyopia, whereas ICL patients may eventually require lens exchanges.

Myth #2: "LASIK Permanently Damages the Eye—ICL Doesn’t"

With LASIK, the major concern is corneal ectasia—where the cornea bulges forward due to structural weakening. This is rare, especially with modern corneal mapping and conservative tissue preservation. At Jryn, we use advanced biomechanical analysis to ensure no one with high risk of ectasia undergoes LASIK.

ICL, on the other hand, preserves corneal structure but is an intraocular procedure. That means:

• There’s a small risk of endophthalmitis (infection inside the eye).
• There’s potential for cataract formation if the lens vault is too low.
• There’s a need for lifelong monitoring of intraocular pressure and endothelial cell count.

Additionally, ICL surgery involves going inside the eye and manipulating internal structures—this introduces considerations around lens sizing, anterior chamber depth, and ongoing endothelial health. At Jryn, we use precise measurements including white-to-white distance, sulcus-to-sulcus ultrasound biomicroscopy, and anterior chamber imaging to ensure exact fit.

It’s a tradeoff. One procedure reshapes your eye externally; the other inserts a foreign body internally. Neither is risk-free—but both are highly safe when done right.

Myth #3: "ICL Eliminates the Risk of Dry Eye and Night Glare"

Because LASIK affects corneal nerves during flap creation, it can cause or worsen dry eye—particularly in the first few months. That’s why at Jryn, we perform meibomian gland imaging and dry eye assessments before recommending LASIK. If dry eye is a concern, ICL or SMILE may be safer.

However, ICL isn’t flawless:

• Some studies show higher incidence of halos post-ICL compared to LASIK or SMILE, especially in patients with larger pupils.

• The lens edges or reflections can cause visual artifacts, particularly at night.

It’s also important to consider psychological perception of night vision quality. Some patients adjust well to halos; others find them distressing. We counsel each patient thoroughly, using pupil-size-to-optic-zone comparisons and real-world visual simulations.

In short, ICL may minimize dry eye risk—but may increase night vision symptoms. It’s about knowing your anatomy and priorities.

Myth #4: "ICL Is Only for High Myopia"

One 2016 study showed ICL provided excellent visual outcomes even in patients with mild myopia—with 96% achieving results within half a diopter of their target.

At Jryn Eye Clinic, we sometimes recommend ICL even for lower prescriptions—especially if the patient has:

• Thin corneas

• High visual demands

• Concerns about corneal stability

• Dry eye issues

• Desire for reversibility

Just because LASIK has long been the go-to doesn’t mean it’s always the best choice today.

So, Which One Is Safer for You?

The question shouldn’t be "Is ICL safer than LASIK?" but rather "Which procedure is safer for my specific eyes and goals?"

Here’s how we approach this at Jryn Eye Clinic:

1. Detailed Eye Mapping: Corneal thickness, shape, topography, pupil size, anterior chamber depth, endothelial count, tear quality.
2. Risk-Benefit Matching:

   • Thin cornea? → ICL or surface laser (e.g., PRK).

   • Large pupil? → Careful discussion about ICL vs LASIK-induced halos.

   • High myopia? → ICL may be safer due to tissue preservation.

   • Dry eye history? → ICL or SMILE may reduce nerve disruption.

3. Patient Lifestyle:

   • Pilots, drivers, athletes? Consider visual stability, glare risk.

   • Office workers with screen fatigue? Consider dry eye.

   • Long-term thinkers? Consider reversibility, potential for cataracts later in life.

4. Surgeon Experience Matters: At Jryn, we’ve performed thousands of successful ICL and LASIK surgeries using cutting-edge technology—from femtosecond lasers to 3D eye tracking systems. More importantly, we follow our patients for years—so we see the long-term outcomes.
5. Technology and Aftercare: It’s not just the surgery—it’s the diagnostics, the precision, the sterile technique, and the support after. We offer lifetime follow-ups because vision changes over time, and your care shouldn’t stop at 20/20.

Conclusion: Let Safety Be Personal, Not Generalized

In a world saturated with blanket advice, it’s tempting to latch onto headlines like "ICL is safer than LASIK." But real safety doesn’t come from the name of a procedure—it comes from matching the right treatment to the right patient, using advanced diagnostics and a highly experienced surgical team.

Both ICL and LASIK are extraordinarily safe when chosen appropriately. Both have transformed millions of lives. But your eyes deserve more than statistics. They deserve precision care, personalized planning, and a team that sees beyond the surgery.

At Jryn Eye Clinic in Busan, we pride ourselves on offering that level of care. Whether you're a local resident or visiting from abroad, we believe you deserve vision correction that is not only effective—but tailored, thoughtful, and deeply safe.

If you're weighing your options, schedule a personalized consultation. We’ll help you understand your eye’s unique blueprint—and recommend the path that protects your vision now and for decades to come.