High Myopia Treatment Options in Busan, Korea
High Myopia Treatment Options in Busan, Korea
High myopia can make everyday activities difficult without glasses or contact lenses. Driving, reading signs, working on a computer, exercising, and traveling may all depend heavily on strong prescription eyewear.
For people considering vision correction in South Korea, Busan offers access to several modern refractive treatment approaches. Depending on your prescription and eye anatomy, options may include SMILE Pro, LASIK, PRK/LASEK, and ICL.
However, high myopia requires more careful screening than mild or moderate myopia. The strongest treatment is not necessarily the best treatment for every patient. Corneal thickness, corneal shape, retinal health, dry eye, prescription stability, age, and other factors all influence candidacy.
For some patients, laser vision correction may be appropriate. For others, especially those with very high prescriptions or limited corneal tissue, an implantable lens such as ICL may be considered.
The key is to match the treatment to the patient's eyes rather than choosing a procedure based only on its popularity.
What Is High Myopia?
Understanding the Prescription
Myopia, or nearsightedness, occurs when light focuses in front of the retina instead of directly on it. The result is blurry distance vision.
There is no single universal number used worldwide to define "high myopia," but clinical discussions commonly use approximately -6.00 diopters or more as a reference point.
The higher the prescription, the more important it becomes to evaluate the entire eye—not just the amount of refractive error.
High myopia can also be associated with structural changes in the eye, including an increased risk of retinal complications. Therefore, refractive surgery should begin with a comprehensive eye examination.
Why High Myopia Requires Careful Screening
A strong prescription does not automatically mean you are unsuitable for vision correction.
Instead, the ophthalmologist needs to determine:
- How stable your prescription is
- Whether your cornea is thick and regular enough for laser treatment
- Whether your corneal shape is normal
- Whether your retina is healthy
- Whether you have significant dry eye
- Whether your anterior chamber is suitable for ICL
- Whether your natural lens is healthy
- Whether your overall eye health supports surgery
This is especially important for international patients who may have limited time in Korea.
Main High Myopia Treatment Options in Busan
SMILE Pro
SMILE Pro is a newer generation of small-incision lenticule extraction technology used for myopic vision correction.
Instead of creating a large corneal flap, the surgeon uses a femtosecond laser to create a small lenticule inside the cornea. The lenticule is then removed through a small incision.
SMILE is often considered for myopia, including higher levels of myopia in appropriately selected patients. Current ophthalmic literature identifies high myopia as one factor that can favor SMILE because of its corneal tissue profile and other considerations.
Potential advantages may include:
- No traditional LASIK flap
- Small corneal incision
- Potentially less disruption to corneal nerves than LASIK
- Useful for selected myopic prescriptions
- Potential advantages for some patients with dry-eye concerns
However, SMILE Pro is not suitable for every prescription or every cornea.
LASIK
LASIK has been used for myopia correction for decades and remains an established refractive surgery.
During LASIK, a corneal flap is created and an excimer laser reshapes the underlying corneal tissue.
For patients with high myopia, the amount of tissue that must be removed becomes increasingly important.
A patient may therefore have an excellent LASIK result with moderate myopia but be a poor candidate for LASIK at a much stronger prescription.
Corneal topography, tomography, thickness, and residual stromal bed considerations are essential when evaluating high-myopia LASIK candidates.
PRK or LASEK
PRK and LASEK are surface-based laser procedures.
Unlike LASIK, they do not create a traditional corneal flap.
They may be considered when a patient's corneal characteristics make flap-based surgery less attractive.
The major limitation is recovery.
Visual recovery after surface ablation is generally slower and the early postoperative period can be more uncomfortable than after LASIK or SMILE.
For international patients visiting Busan for a short trip, the recovery timeline should therefore be discussed carefully before choosing this approach.
ICL
Implantable Collamer Lens surgery takes a different approach.
Instead of removing corneal tissue, an ICL is placed inside the eye behind the iris and in front of the natural crystalline lens. The natural lens remains in place.
ICL can be particularly relevant when a patient has high myopia and the cornea is not an ideal candidate for extensive laser correction.
Current U.S. FDA labeling for EVO/EVO+ ICL and TICL was expanded in November 2025 from ages 21–45 to ages 21–60, although other candidacy requirements still apply.
The device labeling includes treatment ranges extending to approximately -20.00 D for reduction of myopia, depending on the specific lens and clinical circumstances.
This does not mean every patient with a prescription near -20.00 D qualifies.
Eye anatomy and overall ocular health remain critical.
High Myopia: ICL vs SMILE Pro
Why Patients Often Compare These Two
Patients with high myopia frequently ask whether ICL or SMILE Pro is better.
The answer depends on the eye.
FactorICLSMILE ProTreatment locationInside the eyeCorneaRemoves corneal tissueNoYesTraditional flapNoNoHigh myopiaOften consideredOften considered in suitable casesNatural lens retainedYesYesIntraocular surgeryYesNoCorneal thickness importanceLess central to treatmentVery importantRetinal assessmentImportantImportantLong-term monitoringImportantRoutine eye careImplant involvedYesNo
ICL avoids intentional corneal tissue removal but involves intraocular surgery.
SMILE Pro avoids an intraocular implant but changes the cornea.
Neither is automatically safer or better for every high-myopia patient.
Who May Be a Candidate for High Myopia Treatment?
Potential Laser Candidates
You may be considered for SMILE Pro, LASIK, or another laser procedure if you have:
- A stable prescription
- Appropriate corneal thickness
- Normal corneal topography
- Healthy ocular surface
- No significant corneal disease
- Appropriate prescription range
- Healthy retina and other ocular structures
- Realistic expectations
The exact eligibility criteria vary by procedure and technology.
Potential ICL Candidates
ICL may be considered when a patient has:
- Moderate-to-high or high myopia
- Stable refraction
- Appropriate anterior chamber anatomy
- Adequate endothelial cell health
- Healthy eyes overall
- A prescription within the applicable lens range
- Realistic expectations about the procedure
The EVO ICL patient information specifically emphasizes stable refraction, suitable anterior chamber depth, and adequate endothelial cell density when determining candidacy.
Why Corneal Thickness Matters
Laser Surgery Removes Tissue
LASIK and SMILE modify the cornea.
That means the surgeon must calculate how much corneal tissue will remain after treatment.
With high myopia, more correction may require more tissue alteration.
A patient with a relatively thin cornea may therefore be advised against certain laser procedures even if the prescription itself falls within the advertised treatment range.
This is one reason an online "maximum prescription" should never be interpreted as a guarantee of candidacy.
ICL Takes a Different Approach
ICL does not intentionally reshape the cornea.
This can make it an important alternative for some patients with high myopia or corneal characteristics that make laser surgery less desirable.
However, ICL requires adequate internal eye anatomy.
It is not simply a solution for everyone who cannot have LASIK.
Why Retinal Health Matters in High Myopia
High Myopia Affects More Than Vision
High myopia is associated with structural elongation of the eyeball.
This can increase the risk of certain retinal and macular problems.
Therefore, someone with high myopia should not view refractive surgery as treatment for the underlying anatomical risks associated with myopia.
LASIK, SMILE Pro, and ICL can change refractive error, but they do not shorten an elongated eyeball or eliminate retinal risks associated with high myopia.
A dilated retinal examination may therefore be an important part of the preoperative assessment.
Retinal Symptoms Should Be Taken Seriously
Patients with high myopia should seek prompt eye evaluation if they develop symptoms such as:
- Sudden flashes of light
- A sudden increase in floaters
- A curtain-like shadow
- Sudden loss of peripheral vision
- Unexpected reduction in vision
These symptoms can require urgent assessment regardless of whether you are considering refractive surgery.
What Tests Are Needed Before High Myopia Surgery?
Corneal Testing
For laser vision correction, the clinic may perform:
- Corneal topography
- Corneal tomography
- Pachymetry
- Wavefront or optical-quality assessment
- Tear-film evaluation
- Refraction
These tests help determine whether the cornea can safely support the planned correction.
ICL-Specific Testing
For ICL, evaluation may include:
- Anterior chamber depth
- White-to-white measurement
- Endothelial cell count
- Refraction
- Eye pressure
- Slit-lamp examination
- Natural lens evaluation
- Retinal examination
The exact testing protocol depends on the clinic and lens system.
Can Thin Corneas With High Myopia Be Treated?
Possibly, But ICL May Be Considered
Thin corneas can limit the amount of laser correction that can safely be performed.
If the cornea cannot support the planned treatment, the ophthalmologist may recommend against LASIK or SMILE Pro.
ICL can be an alternative because it does not require removing corneal tissue.
However, the patient must still meet ICL requirements.
The important principle is:
A thin cornea does not automatically mean ICL is appropriate.
The internal anatomy of the eye must also be suitable.
What About Very High Myopia Above -15.00 D?
Treatment Becomes More Individualized
Very high prescriptions require particularly careful evaluation.
For EVO ICL, current FDA labeling distinguishes between correction and reduction of myopia across the applicable prescription range.
For example, the labeling includes myopia from -3.00 D through -15.00 D for correction and greater than -15.00 D through -20.00 D for reduction, subject to other requirements.
This distinction matters because patients should not assume that a treatment advertised for "up to -20.00 D" means complete elimination of a -20.00 D prescription is guaranteed.
The actual visual outcome depends on the patient's eye and the selected treatment.
Can High Myopia Be Treated With SMILE Pro?
Selected Patients May Qualify
SMILE is used for myopic correction, and current ophthalmic guidance identifies high myopia as a situation in which SMILE may have advantages over some other laser approaches.
However, the patient's corneal measurements still determine suitability.
A high prescription combined with inadequate corneal thickness, irregular topography, or other ocular problems may make laser surgery inappropriate.
SMILE Pro Does Not Treat Retinal Myopia
This distinction is important.
SMILE Pro changes refractive error.
It does not reverse the anatomical changes associated with high myopia.
Patients should continue appropriate retinal and eye-health monitoring after refractive surgery.
Recovery After High Myopia Treatment
SMILE Pro and LASIK
Laser procedures generally have relatively rapid visual recovery, although recovery varies between individuals.
SMILE and LASIK may allow patients to resume many daily activities relatively quickly when healing is uncomplicated.
The exact timeline depends on the procedure and the surgeon's instructions.
ICL Recovery
ICL recovery is also often relatively rapid, but it is an intraocular procedure.
Follow-up is important for monitoring:
- Eye pressure
- Lens position
- Inflammation
- Vision
- Corneal health
International patients should plan their trip around required postoperative examinations rather than booking a flight immediately after surgery.
What Are the Risks of High Myopia Surgery?
Laser Vision Correction Risks
Potential risks may include:
- Dry eye symptoms
- Glare or halos
- Undercorrection or overcorrection
- Regression
- Corneal ectasia in susceptible eyes
- Need for enhancement
- Reduced visual quality in some circumstances
Proper screening helps identify patients at increased risk.
ICL Risks
ICL involves intraocular surgery, so potential complications are different.
They can include:
- Increased eye pressure
- Cataract formation
- Inflammation
- Infection
- Lens rotation or displacement
- Endothelial cell loss
- Need for repositioning, exchange, or removal
The FDA identifies cataract, increased intraocular pressure, endothelial cell loss, and secondary surgical intervention among potential risks associated with phakic IOLs.
This is why ICL should not be described simply as a "safer LASIK alternative."
It is a different type of surgery with a different risk profile.
What About High Myopia Treatment After Age 40?
Presbyopia Changes the Decision
Patients over 40 need additional counseling.
SMILE Pro, LASIK, and ICL can correct distance refractive error, but standard procedures do not stop presbyopia.
A patient may therefore achieve excellent distance vision and still require reading glasses.
For older high-myopia patients, the condition of the natural crystalline lens is also increasingly important.
An ophthalmologist may need to determine whether the patient has early lens changes or other age-related conditions before recommending a refractive procedure.
How Much Does High Myopia Treatment Cost in Busan?
Why Prices Vary
The cost of vision correction in Busan depends on the procedure and individual circumstances.
Factors may include:
- SMILE Pro versus another laser technology
- ICL versus laser treatment
- Toric ICL requirements
- Diagnostic testing
- Surgeon experience
- Technology platform
- Medication
- Follow-up appointments
- Enhancement policies
- International-patient services
ICL is generally more expensive than corneal laser surgery because it involves an implanted lens.
However, cost should not be the primary reason for selecting a procedure.
International Patients Should Calculate Total Trip Costs
If you are traveling to Busan from another country, consider:
- Airfare
- Accommodation
- Transportation
- Surgery
- Diagnostic testing
- Medication
- Additional follow-up
- Possible extra nights if recovery requires it
A clinic offering a lower advertised surgery price may not necessarily be the most economical option after the full trip is considered.
Why Consider Busan for High Myopia Treatment?
Access to Multiple Refractive Options
Patients researching eye surgery in South Korea may choose Busan because they can explore several modern approaches in one medical setting.
The important advantage is not simply having access to advanced equipment.
It is having a thorough examination that determines whether a patient is actually suited to that technology.
A good consultation should explain why a particular procedure is recommended—and why another procedure may not be.
International Patient Support Matters
Foreign visitors should also consider:
- English-language communication
- Clear preoperative instructions
- Accessible postoperative follow-up
- Medical records
- Emergency contact procedures
- Coordination if complications occur after returning home
This is particularly important for high-myopia patients because long-term eye health remains important after refractive surgery.
How to Choose Between ICL, SMILE Pro, and LASIK
A Practical Starting Point
A general comparison can help:
ICL may be worth discussing if:
- You have high or very high myopia
- Your cornea is relatively thin
- Your corneal shape is unsuitable for laser correction
- You prefer to avoid intentional corneal tissue removal
- Your internal eye anatomy is suitable
SMILE Pro may be worth discussing if:
- You have suitable corneal anatomy
- You have myopia within the treatment range
- You prefer a flap-free laser approach
- Your ocular surface is appropriate
- You are suitable for lenticule extraction
LASIK may be worth discussing if:
- Your cornea is healthy and sufficiently thick
- Your topography is normal
- Your prescription is appropriate
- You want rapid visual recovery
- You are a good candidate for corneal laser surgery
These are general considerations—not individual medical recommendations.
What Should International Patients Ask a Busan Eye Clinic?
Questions to Ask Before Booking Surgery
If you are traveling to Busan for high-myopia treatment, consider asking:
- What is my exact refractive error?
- Is my prescription stable?
- Is my cornea suitable for SMILE Pro or LASIK?
- What is my corneal thickness?
- Do I have any abnormal corneal topography?
- Is my retina healthy enough for elective refractive surgery?
- Am I a candidate for ICL?
- Which procedure would you recommend and why?
- What are the alternatives if I am not suitable for the first option?
- How many postoperative visits are required before I fly home?
- What happens if I develop a problem after returning home?
- Will I receive a copy of my surgical and diagnostic records?
A clinic that gives clear answers should be able to explain both the advantages and limitations of the recommended treatment.
Is High Myopia Surgery Worth It?
Consider the Long-Term Benefit
For a suitable candidate, refractive surgery can significantly reduce dependence on glasses or contact lenses.
This can be particularly valuable for people with strong prescriptions who have spent years dealing with thick lenses, contact-lens maintenance, or limitations during sports and travel.
But successful refractive surgery should not be measured only by whether you can stop wearing glasses.
Long-term eye health matters too.
High-myopia patients should continue appropriate ophthalmic monitoring even after achieving excellent uncorrected vision.
Conclusion
High myopia can be treated with several modern vision-correction approaches in Busan, Korea, but there is no single procedure that is best for every patient.
SMILE Pro, LASIK, PRK/LASEK, and ICL each work differently and have their own advantages, limitations, and eligibility requirements.
For patients with suitable corneas, laser vision correction may provide excellent results without an intraocular implant. For selected patients with high prescriptions, thin corneas, or other characteristics that make extensive laser correction less attractive, ICL may be an important alternative.
The most important step is a comprehensive eye examination.
High myopia is not simply a strong glasses prescription. It can be associated with structural changes in the eye, so retinal health and overall ocular health should be evaluated alongside refractive-surgery candidacy.
For international patients visiting Busan, planning is equally important. Allow enough time for diagnostic testing, surgery, postoperative monitoring, and communication with your home-country eye doctor if needed.
Rather than choosing a procedure based on advertising or price, ask an experienced ophthalmologist to compare the available options for your prescription, cornea, retina, age, lifestyle, and long-term visual goals.
That individualized approach offers the best foundation for making an informed decision about high myopia treatment in Busan.
FAQs About High Myopia Treatment in Busan, Korea
1. What is the best treatment for high myopia in Busan?
There is no single best treatment for everyone. Depending on your eye anatomy and prescription, options may include SMILE Pro, LASIK, PRK/LASEK, or ICL.
2. Is ICL good for high myopia?
ICL can be an important option for selected patients with moderate-to-high or very high myopia. It does not intentionally remove corneal tissue, but patients must meet anatomical and ocular-health requirements.
3. Can SMILE Pro treat high myopia?
SMILE is used for myopic correction, including selected higher prescriptions. Current ophthalmic guidance identifies high myopia as one factor that may favor SMILE, but individual corneal measurements determine candidacy.
4. Is LASIK suitable for very high myopia?
Sometimes, but not always. As myopia increases, corneal tissue requirements become more important. Some patients with very high prescriptions may be better suited to another treatment.
5. Can people with thin corneas have high myopia surgery?
Possibly. Thin corneas can limit laser treatment, but selected patients may be candidates for ICL if their internal eye anatomy and overall ocular health are appropriate.
6. Does ICL remove corneal tissue?
No. ICL is implanted inside the eye behind the iris and in front of the natural crystalline lens.
7. Can high myopia surgery prevent retinal problems?
No. Refractive surgery changes the focusing power of the eye but does not reverse the anatomical changes associated with high myopia. Appropriate retinal monitoring remains important.
8. Is ICL available for patients over 40?
Age alone does not automatically exclude someone from ICL. Current U.S. FDA labeling for EVO/EVO+ ICL and TICL extends the indicated age range to 21–60 years, subject to other requirements.
9. How long should international patients stay in Busan after surgery?
The appropriate stay depends on the procedure, individual healing, and clinic follow-up schedule. Patients should not book their return flight until they understand the required postoperative examinations.
10. How should I choose a high-myopia clinic in Busan?
Look beyond price. Consider diagnostic testing, surgeon experience, technology, procedure options, postoperative care, communication for international patients, and how clearly the clinic explains risks and alternatives.
