BSM Eye Clinic.

BSM Eye Clinic.

BSM Eye Clinic.

BSM Eye Clinic.

BSM Eye Clinic.

BSM Eye Clinic.

ICL

ICL implantation: finding the lens that fits the space inside your eye and your prescription

About

What Is ICL Implantation?

Unlike conventional laser vision correction (LASIK, LASEK), which reshapes the cornea to correct your prescription,
ICL implantation (Implantable Collamer Lens, ICL) is a next-generation procedure that preserves the cornea in its original form
and corrects vision by placing a special lens inside the eye.

What Is ICL Implantation?
BSM Eye Clinic
ICL implantation:
Who is it right for?
  • 1

    Those who want extreme myopia or astigmatism corrected without prescription limits

  • 2

    Those with corneal disease or past corneal injury who want a safe procedure

  • 3

    Those whose corneas are too thin for LASIK or LASEK

  • 4

    Those who want to minimize the risk of keratoconus

Features of ICL Implantation

point 01

Flawless vision correction that preserves the cornea

Because the cornea is not reshaped, even extreme myopia and astigmatism can be corrected safely, with little concern about side effects such as myopic regression or corneal weakening.
Your natural cornea stays intact while a range of customized lenses delivers high-definition vision.

Flawless vision correction that preserves the cornea
point 02

FDA guideline compliance and precise implantation

Because the cornea is not reshaped, even extreme myopia and astigmatism can be corrected safely, with little concern about side effects such as myopic regression or corneal weakening.
Your natural cornea stays intact while a range of customized lenses delivers high-definition vision.

FDA guideline compliance and precise implantation
Anterior chamber depth

Anterior chamber lens implantation (Artisan, Artiflex) - 3.2mm or more

Posterior chamber lens implantation (EVO+ AQUA ICL, ICL, toric ICL) - 3.0mm or more

Anterior chamber depth
Corneal endothelial cell count (normal: 2–3,000 cells)

The corneal endothelium is a tissue that makes up about 10% of total corneal thickness. A normal endothelial cell count is 2,000–3,000, and once damaged, these cells do not regenerate. We therefore assess surgical eligibility taking each patient’s age into account and select candidates in line with US FDA safety standards.

point 03

Precise measurement and thorough aftercare

We measure the space inside the eye with advanced equipment for error-free accuracy, raising the quality of the surgical result, and carefully manage even the smallest variables that may arise after surgery. Through regular follow-up exams, we check the condition of the lens to help you keep clear, stable vision for life.

Anterior chamber depth
Anterior chamber depth

When the lens size is not right

If the lens is too small: contact with the crystalline lens may cause cataracts.
If the lens is too large: it may block the flow of aqueous humor in the eye and cause glaucoma.
Other: poor hygiene at the iris incision site may lead to iritis.

When the astigmatism axis is misaligned
When the astigmatism axis is misaligned

If the lens’s astigmatism axis is misaligned, vision is not fully corrected,
which can leave residual astigmatism or cause dizziness.

ICL Implantation Procedure

How is ICL implantation performed?

  • 3mm incision

    1. 3mm incision

    To reduce corneal damage, a precise micro-incision
    of less than 3mm is made at the periphery.

  • Lens insertion

    2. Lens insertion

    Through the incision, a special lens made
    for your individual prescription is safely inserted.

  • Lens positioning

    3. Lens positioning

    Using dedicated instruments, the lens is securely positioned
    in the optimal place behind the iris.

Types of ICL Implantation

EVO+AQUA ICL

ICL lenses are made of biocompatible Collamer material, so they stay stable inside the eye without any foreign-body sensation.
Containing a small amount of purified collagen, they offer excellent optical quality, and the 360μm central hole design that supports aqueous humor flow
allows safe vision correction without a separate iridotomy and without worrying about increased intraocular pressure.

EVO+AQUA ICL
  • Quick return to daily life: vision recovers within 1–2 days

  • Minimally invasive: micro-incision of 3mm or less

  • ZERO pain or hassle: no iridotomy needed

  • Wide correction range: myopia -0.5D to -18D / astigmatism -1D to -6D.

  • Point 01

    Proven safety

    Its safety has been proven by more than 20 years of clinical data and over 900,000 surgical cases. Using the FDA-approved Collamer material from STAAR Surgical (USA), the world’s first ICL developer,
    the lens provides consistent stability inside the eye.

    Proven safety
  • Point 02

    Safer with natural aqueous humor flow

    Precisely designed holes at the center and periphery of the lens help aqueous humor
    flow naturally inside the eye. This maintains normal
    metabolism within the eye and dramatically lowers the risk of
    postoperative complications such as cataracts or glaucoma.

    Safer with natural aqueous humor flow
  • Point 03

    Satisfaction proven by results

    Long-term accumulated clinical research has proven ICL’s outstanding
    stability and efficacy. A patient satisfaction rate as high as
    99% reflects the precision of the surgical results and the distinct
    difference in quality of vision.

    0%

    Satisfied after surgery.

    0%

    Would choose
    ICL again.

    0%

    Satisfied with excellent vision
    after surgery.

GLAZE

GLAZE is a posterior chamber phakic intraocular lens placed in the space between the iris and the crystalline lens.
Its Center Hole is designed to let aqueous humor flow naturally inside the eye, allowing safe surgery without an iridectomy.
Made with an aspheric shape that precisely accounts for light refraction, it delivers a premium quality of vision that is a step clearer and cleaner than conventional lenses.

GLAZE
  • Quick return to daily life: vision recovers within 1–2 days

  • Ultra-micro incision technique: micro-incision of 2.8mm or less

  • Iris-preserving system: no iridotomy, so surgery is safe without worry about increased intraocular pressure

  • Optimized for extreme myopia: wide-range, high-definition correction from -3.0D to -23D

  • Precise astigmatism correction: accurate, clear vision for astigmatism from -0.5D to -5D

  • Point 01

    Clear, distortion-free vision with an aspheric design

    With an aspheric design similar to the structure of the human cornea,
    refractive errors of light are precisely controlled. Much thinner than
    conventional spherical lenses, it blocks distortion at the edges of the visual field and chromatic dispersion,
    providing a wide, clear, high-definition view from any angle.

    Clear, distortion-free vision with an aspheric design
  • Point 02

    Smooth aqueous humor flow without an iridectomy

    A total of five precision holes, including a specially designed cone-shaped central hole, keep aqueous humor
    flowing naturally inside the eye. As a result, safe surgery is possible without a cumbersome,
    potentially painful iridectomy and without worry about increased intraocular pressure.

  • Point 03

    Fully reversible to your pre-surgery state at any time

    Clear vision can be maintained permanently without separate care or cleaning,
    and if ever necessary, simply removing the lens safely restores
    your eye to its pre-surgery state, so you can choose with peace of mind.

    Fully reversible to your pre-surgery state at any time

ECHO IPCL

The ECHO lens’s unique 7 Holes system fully preserves aqueous humor flow inside the eye, minimizing concerns about side effects such as increased intraocular pressure.
With as many as 1,170 lens options, you can choose a customized lens best optimized for your eyes,
and its reinforced support structure and innovative technology deliver a new level of comfort and safe vision correction results.

ECHO IPCL
  • Quick return to daily life: vision recovers within 1–2 days

  • The essence of ultra-thin technology: 0.08mm lens thickness

  • Simplified safety system: one-step surgery without iridotomy

  • Wide correction range: 15D to -30D, 90 customized options

  • Micro custom fit: 13 precise sizes in 0.25mm increments

  • Point 01

    Intelligent Smart Banding

    The ECHO lens’s special Smart Banding technology features a support structure that
    responds flexibly to the space inside the eye. It stretches or contracts on its own to absorb
    measurement errors of up to 0.5mm,
    providing stable, secure fixation in any eye structure.

    Intelligent Smart Banding
  • Point 02

    Natural “breathing” for the eye with 7 holes

    Through 7 micro-holes, the ECHO lens lets the fluid in the eye (aqueous humor) flow
    naturally. It maintains a healthy environment inside the eye without an unnecessary iridotomy,
    reducing postoperative pain and foreign-body sensation while maximizing
    everyday comfort.

  • Point 03

    Dramatically reduced glare & halos

    A special cone-shaped structure fundamentally blocks halos and supports circulation inside the eye.
    Experience clear, stable vision without glare, even when driving at night or during outdoor activities.

    Dramatically reduced glare & halos

ARTIFLEX-TORIC

Artiflex is an intraocular lens that safely corrects a broad range of vision, from mild to extreme myopia.
Made of flexible silicone, it can be implanted through just a 3.2mm micro-incision, so recovery is very fast.
A key advantage is its design that does not touch the crystalline lens, significantly lowering the likelihood of cataracts.
After receiving European CE certification in 2005, it has been proven in the global market for years,
and it reliably corrects refractive errors of up to 15 diopters of combined myopia and astigmatism.

ARTIFLEX-TORIC
  • Quick return to daily life: vision recovers within 1–2 days

  • The essence of ultra-thin technology: 0.08mm lens thickness

  • Simplified safety system: one-step surgery without iridotomy

  • Wide correction range: 15D to -30D, 90 customized options

  • Micro custom fit: 13 precise sizes in 0.25mm increments

  • Point 01

    Medical Safety

    It maintains a stable distance from both the crystalline lens and the corneal endothelial cells.

    It is not restricted by the iris axis or pupil dilation.

    It is designed in one size that fits all eyes well.

    It induces little astigmatism.

    Medical Safety
  • Point 02

    Technical Expertise

    It features an Edge Design that prevents glare.

    It offers excellent vision correction results.

    Postoperative vision can be predicted accurately.

    The lens is easy to reposition or replace, allowing professional aftercare.

    Technical Expertise
  • Point 03

    Surgical Efficiency

    The tiny 3.2mm incision requires no sutures, placing less burden on the body.

    With an optimized system, surgery time is much shorter than before.

    Vision can recover quickly right after surgery.

    Overall recovery and return to daily life is very fast.

    Surgical Efficiency

BSM Eye Clinic Is Different.

Since the days when vision correction was not as common as it is today,
BSM Eye Clinic has been setting standards step by step.

Precise lens sizing

01Precise lens sizing

Using data optimized for Asian eye structures,
we minimize lens sizing error.

Thorough infection control (endophthalmitis rate in the 0% range)

02Thorough infection control (endophthalmitis rate in the 0% range)

By strictly following international standard infection control guidelines,
we block the possibility of endophthalmitis at the source.

Same-day surgery on both eyes

03Same-day surgery on both eyes

Based on our accumulated know-how, both eyes can be treated
in a single day, helping you recover quickly.

Skilled technique (short-time surgery)

04Skilled technique (short-time surgery)

Drawing on extensive experience, we shorten surgery time
to minimize eye strain and damage.

Precise incisional astigmatism correction

05Precise incisional astigmatism correction

With specialized incision know-how, even astigmatism
is precisely corrected in a single procedure.

FAQ

Frequently Asked Questions

QIs ICL only for people who cannot have LASIK or LASEK?

No. ICL is often considered when laser vision correction is difficult because of high myopia or a thin cornea, but it can also be an option for those who want to preserve corneal tissue.

However, it is not possible for everyone; suitability is decided after carefully checking the depth of the space inside the eye, the corneal endothelial cell count, eye pressure, and the condition of the crystalline lens and retina.

QIs ICL possible with very high myopia or high astigmatism?

Yes, even with very high myopia or high astigmatism, ICL may be possible depending on the exam results.

BSM Eye Clinic corrects high and very high myopia with the EVO+ Aqua ICL, and when there is astigmatism, a Toric ICL can correct myopia and astigmatism together.

However, there is a range of correctable prescriptions, and whether surgery is possible and which lens is suitable are decided after checking the depth of the space inside the eye, the corneal endothelial cell count and the lens size as a whole.

QIs it impossible if the space inside the eye or the endothelial cell count is insufficient?

ICL may be limited if there is not enough space inside the eye or the corneal endothelial cell count is below the standard.

Corneal endothelial cells play an important role in keeping the cornea clear and need continued monitoring after surgery.

The required anterior chamber depth and endothelial cell standard differ by lens type, and age is also considered, so the doctor decides whether surgery is possible based on the exam results.

QHow is the surgery performed and how long does it take?

With the EVO+ Aqua ICL, the cornea is not reshaped with a laser. A small incision is made in the eye and a folded lens is inserted and positioned behind the iris and in front of the crystalline lens. The lens is designed so that aqueous fluid flows through a tiny hole in its center, so a separate iridotomy before surgery is generally not needed.

It is usually done under anesthetic eye drops, and the surgery itself takes about 20 to 30 minutes per eye.

The actual time and whether both eyes are done on the same day are explained according to the doctor's surgical plan.

QHow long does it take from the exam to the surgery?

For ICL, the power and size of the lens suited to your eyes are decided through a comprehensive exam.

If the clinic has a lens that matches the results in stock, surgery can proceed quickly, but if not, a separate order may be needed.

In particular, if the lens is not in stock in Korea, it may take 2 to 3 weeks or more until surgery.

The exact schedule is explained after the exam, once lens stock and bookings have been checked.

QDoes the surgery hurt? How is anesthesia given?

ICL surgery is usually done under anesthetic eye drops, so there is almost no pain during surgery.

You may feel pressure on the eye or mild discomfort during the procedure.

After surgery, a foreign-body sensation, stinging or sensitivity to light may occur temporarily and usually ease as you recover. If you have severe pain or a sudden drop in vision, contact the clinic immediately.

QHow long is the recovery after surgery?

Visual recovery after ICL is relatively fast, and if the eye is stable, light daily activities are often possible from the day after surgery.

However, the time it takes for vision to stabilize fully differs from person to person, and glare or temporary blur may occur right after surgery.

Regular check-ups after surgery are especially important to check eye pressure, the position of the implanted lens and its distance from the crystalline lens.

QWhen can I exercise, drink alcohol or take a shower?

After ICL surgery, care is needed for a certain period to prevent infection and allow stable recovery.

- Shower and washing hair: possible from the day after surgery; washing your face with water is possible after 3 days and with soap after 1 week. Take care not to let water get into your eyes or rub them hard.

- Light exercise: gym workouts, golf, jogging and yoga are possible 1 week after surgery.

- Strenuous exercise and swimming: martial arts, team sports and swimming are possible 1 month after surgery.

- Alcohol: we recommend not drinking for 1 month after surgery.

- Sauna: possible 1 month after surgery.

It is especially important not to rub your eyes for 1 month after surgery, and a protective eye shield must be worn while sleeping for 2 weeks.

The speed of recovery differs from person to person, so please resume daily activities according to the instructions of the medical staff.

QWhen can I use a computer or phone after surgery?

If the eye is stable and there is no major discomfort, you can use a phone or computer from the next day.

Early on, sensitivity to light, temporary blur or dryness may occur, so take frequent breaks when looking at a screen for a long time.

Use your prescribed eye drops as instructed and avoid driving until your vision has recovered sufficiently.

QWhat are the side effects of ICL surgery?

After ICL surgery, temporary glare or halos, sensitivity to light and increased eye pressure may occur.

In rare cases cataract, glaucoma, a decrease in corneal endothelial cells, inflammation or infection, or lens malposition may occur, and if a toric lens rotates, the astigmatism correction can change.

It is therefore important to measure the space inside the eye, the endothelial cell count and the lens size precisely before surgery, and to check eye pressure and lens position regularly afterwards.

QCan ICL surgery cause cataract or glaucoma?

Although rare, cataract, increased eye pressure or glaucoma-related problems can occur after ICL surgery.

Risk factors include the implanted lens being too close to the crystalline lens or a problem with the flow of aqueous fluid inside the eye.

To reduce these risks, the lens size and the structure inside the eye are measured precisely before surgery, and eye pressure, the crystalline lens and lens position are checked regularly afterwards.

QWill I have glare (halos) after surgery?

Yes, after ICL surgery lights such as street lights or car headlights may look spread out or have halos around them at night.

With the EVO+ Aqua ICL in particular, glare or halos may be noticed early after surgery because of the tiny hole in the center of the lens. These symptoms usually ease gradually as the eye adapts over time.

The severity and the adaptation period differ from person to person, and if glare is severe or continues to interfere with daily life, it is better to have your eyes checked.

QHow much does ICL surgery cost?

The cost of ICL surgery can vary depending on the type of lens, whether astigmatism is corrected, and additional tests and the surgical plan according to your eyes.

In particular, the cost differs between standard and toric lenses, so the most accurate way is to be informed of the suitable lens and the final cost after a comprehensive exam.

QWhy does the price differ by lens type?

The cost of ICL surgery can differ depending on the lens manufacturer and material, the optic design and whether it corrects astigmatism.

Rather than using a relatively cheaper lens to lower the cost, BSM Eye Clinic uses only the EVO+ Aqua ICL.

The EVO+ Aqua ICL features Collamer, a material designed for biocompatibility, and a central hole that helps the flow of aqueous fluid inside the eye.

For ICL surgery, it is important to consider the characteristics and safety of the lens, the doctors' surgical experience and the aftercare system as a whole, rather than comparing only the price.

We check in a comprehensive exam whether the EVO+ Aqua ICL is suitable for your eyes and then explain whether surgery is possible and the cost.

QWhich is better, SMILE LASIK or ICL?

Neither is simply better; the suitable method depends on your eyes.

SMILE LASIK corrects vision by removing tissue inside the cornea, so corneal thickness and shape and the prescription must be considered.

ICL does not remove corneal tissue, so it can be considered even with high myopia or a relatively thin cornea, but there must be enough space inside the eye and enough corneal endothelial cells.

It is important to decide after comparing the suitability and risk factors of both procedures in a comprehensive exam.

QWhat is the difference between EVO+ Aqua ICL, Glaze and Eco IPCL?

Lenses used for lens implantation differ in manufacturer, material, lens design and correctable range.

Glaze and Eco IPCL are lenses based on hydrophilic acrylic material, featuring an aspheric optic design and a choice of various lens sizes and powers.

The EVO+ Aqua ICL uses Collamer, a patented material containing collagen, and features a material designed for biocompatibility and smooth aqueous flow through a tiny hole in the center of the lens. It is approved by the US FDA and is supported by clinical research and surgical experience accumulated over a long period.

BSM Eye Clinic uses only the EVO+ Aqua ICL, considering the lens material, biocompatibility and clinical safety data as a whole.

However, even a lens with good characteristics is not suitable for every eye, so the suitable lens is decided after a comprehensive exam confirms whether surgery is possible.

QWhich is better, ICL or LASEK?

LASEK and ICL differ in where and how vision is corrected.

LASEK corrects the corneal surface with a laser after the epithelium is removed, so enough corneal thickness must remain after surgery.

ICL does not remove corneal tissue, but separate safety conditions such as the space inside the eye and the corneal endothelial cell count must be met.

The suitable procedure is chosen considering the cornea, the degree of myopia and astigmatism, recovery time and long-term care as a whole.

QCan the implanted lens be used for life? Does it have a lifespan?

The lens used in ICL surgery is designed to stay in the eye for a long time and is not a consumable that must be replaced at regular intervals.

However, removal or replacement may be needed if a cataract develops with age or if there are changes in lens position, eye pressure or corneal endothelial cells.

It is therefore important to keep having regular eye exams after surgery even if you see well.

QCan the lens be removed or replaced later?

Yes, the implanted lens can be removed or replaced after surgery if the doctor judges it necessary.

This is considered when the lens size or position is not suitable, when a toric lens has rotated, when the condition of the eye changes or when cataract surgery is needed.

However, removal or replacement is also surgery inside the eye and carries its own risks, and the vision correction effect disappears when the lens is removed.

QWhat should I look for when choosing a clinic for ICL surgery?

When choosing a clinic for ICL, it is more important to check the exam system, the doctors' surgical experience and the long-term aftercare system than the cost.

In particular, it is good to see whether the lens size and the space inside the eye are assessed accurately, and whether corneal endothelial cell tests and check-ups of eye pressure and lens position are done regularly.

BSM Eye Clinic recommends a method suited to your eyes through a comprehensive exam and a one-on-one consultation with the doctor.

Details may differ depending on the condition of your eyes. Please confirm through a comprehensive eye exam and consultation.