Lens Implantation Surgery
High Myopia Correction Without Corneal Ablation
EVO ICL Lens Implantation Surgery
EVO+ Intraocular Lens Implantation: A next-generation reversible vision correction procedure that corrects vision by inserting a special lens into the eye without cutting the cornea.
Safe and Reassuring Eyes through Advanced Technology for Eyes
Zero corneal damage,
Reversible surgery
Restorable to original state
FDA/KFDA approved,
Proven in over 1 million procedures worldwide
From extreme myopia (-18D)
to thin corneas, a wide range of applications
Advantages of EVO ICL
Vision correction surgery with reduced burden of dry eye syndrome
EVO ICL does not involve cutting
or reshaping the cornea,
so the surgical procedure itself
does not worsen dry eye syndrome.
'Reversible' surgery that can be removed if necessary
Unlike surgery that permanently reshapes the cornea,
the lenses can be removed or replaced
as needed.
Short surgery, quick return to daily life
The procedure typically takes about 20 to 30 minutes, and most patients can return to their daily routine shortly thereafter.
Approved by the US FDA, CE, and KFDA:
The latest posterior chamber lens
Key Features of Collamer®: The Advanced Lens Material
The EVO+ ICL lens from STAAR Surgical in the USA, based on Swiss precision optical technology,
is made from Collamer®, a biocompatible material, ensuring it remains safely in place within the eye.
Collamer® Material
Collamer is a collagen-containing biocompatible material,
designed to maintain comfort even when placed in the eye for extended periods.
Soft and Flexible Structure
The EVO ICL lens features a soft and highly flexible structure,
making it easy to insert into the eye through a small incision and ensuring a smoother surgical process.
KS-Aquaport Optical Zone
The wide optical section minimizes nighttime glare and provides a clear field of view.
UV Protection
Colamer has its own UV protection function,
helping to shield the eyes from harmful ultraviolet rays.
Proven through protein deposition experiments,
Superior biocompatibility of Collamer.
Acrylic Lens
High-density protein deposition
Collamer Lens
No protein deposition was detected.
In an experiment comparing acrylic lenses and collamer lenses after one minute of exposure to a protein mixture, the acrylic lenses showed significant protein adhesion, whereas the collamer lenses exhibited almost no deposits.
This unique characteristic of collamer lenses has been reported to help reduce inflammation, light scattering, and cellular reactions that may occur post-surgery.
Furthermore, no significant inflammatory response was observed during long-term follow-up, and results indicate that clinical flare or cellular reaction did not occur in the vast majority of patients (approximately 99.6–100%) after ICL implantation.
Human Eye
Collamer mimics the natural properties of the human eye
Acrylic material
Reference
¹ Toselli P, Mogayzel PJ Jr, Faris B, Ferrera R, Franzblau C. Mammalian cell growth on collagen-hydrogels. Scan Electron Microsc. 1984(Pt3):1301-1312.
² Martin RG, Sanders DR. Higher order aberrations following implantation of four foldable lens designs.
Presented at : American Society of Cataract and Refractive Surgery(ASCRS); June 21-26, 2003.
³ Ossipov A. Comparison of internal reflectance patterns of COLLAMER, acrylic and silicone. 1997. Data on file, STAAR Surgical.
Without iridotomy ICL Surgery
CentraFLOW™ Technology, first developed by the U.S.-based STAAR Surgical Company,
eliminates the need for iridotomy, thereby reducing pain and simplifying the procedure.
The safety of this innovative technology has been validated for over nine years.
KS-AquaPort®
EVO+ ICL features four 360μm Aquaport™ holes at the lens center, enabling natural circulation of aqueous humor within the eye.
This innovative design significantly reduces the risk of cataract development and prevents intraocular pressure elevation.
CentraFLOW™ Technology
The central hole design allows aqueous humor to pass naturally through the lens center,
helping maintain a safe distance from the crystalline lens.
Its sophisticated design minimizes nighttime glare without affecting optical performance,
delivering clear visual quality.
EVO ICL Surgery Procedure
STEP 01
Comprehensive Pre-operative Examination
Following your ICL consultation, our medical team
will conduct a series of precise examinations.
We meticulously evaluate your eye health, including
corneal condition, axial length, and anterior chamber depth (ACD).
STEP 02
Topical anesthesia and pupil dilation
On the day of surgery, the pupils are dilated and
anesthetic eye drops are administered to minimize
discomfort before proceeding with the procedure.
STEP. 03
Corneal Micro-Incision
A very small incision is made at the edge of the cornea to insert the ICL lens (pain is minimal during the procedure due to sufficient anesthesia).
STEP. 04
Lens insertion and positioning
The soft, foldable ICL is inserted through a micro-incision,
followed by the surgeon’s meticulous adjustment to
ensure the lens is precisely positioned within the eye.
STEP. 05
Surgery Completion & Discharge
Prescription of eye drops for infection prevention,
Must return home with a guardian or companion on the same day
(Driving restrictions will be determined based on recovery progress
and advised by the attending physician)
STEP. 06
Postoperative Care and Monitoring
After 1-2 days, as your eyes adapt and recover, your vision will gradually stabilize. Avoid rubbing your eyes until 3-5 days post-procedure.
Please attend your follow-up appointment on schedule to monitor progress.
FAQ
Q. Do I have to keep the EVO ICL lens in my eye for life?
EVO ICL lens implantation is a procedure designed for long-term use inside the eye.
However, since it is a reversible lens implantation procedure that can be removed or replaced by a specialist if necessary, adjustments can be made depending on the situation.
Q. When the lens is inserted, can you see it or feel any foreign body sensation?
With EVO ICL, the lens sits behind the iris so it is not visible from the outside,
and it does not adhere to the structures within the eye. It is known to cause minimal foreign body sensation as it does not adhere to the structures within the eye.
Q. I have high myopia and was told LASIK isn't an option. Is EVO ICL possible?
For cases of high myopia exceeding the correction range of LASIK or thin corneas, EVO ICL lens implantation has been designed to serve as an alternative.
However, actual feasibility is determined through precise examinations such as eye length and anterior chamber depth.
Q. Can I resume my daily activities immediately after lens implantation surgery?
Most patients report being able to resume daily activities on the day of or the day after lens implantation surgery.However, it is advisable to
avoid rubbing your eyes or strenuous exercise initially.
Q. Are there any side effects or risks associated with lens implantation surgery?
As with all eye surgeries, Potential complications may include inflammation, increased intraocular pressure,and the need for additional procedures.
At St. Mary's Jin Eye Center, we reduce risk factors through preoperative screening and ensure safe management with regular postoperative checkups. we reduce risk factors through preoperative screening and ensure safe management with regular postoperative checkups.
Learn more
Latest Information on Lens Implantation Surgery at St. Mary's Jin Eye Center
Check out the blog below for more information on lens implantation surgery, post-operative care methods, and vision recovery tips.
What is EVO ICL lens implantation?
EVO ICL is a vision correction procedure that does not remove corneal tissue . A STAAR Visian EVO+ ICL lens is placed inside the eye to correct vision.
While LASIK, LASEK and SILK change refraction by removing corneal tissue, ICL leaves your natural lens in place and inserts a lens between the iris and the natural lens. Because corneal tissue is preserved, it is an option when the cornea is thin or the prescription is too high for corneal surgery.
Do not confuse it with cataract surgery
Both procedures use the word "lens", but they are completely different operations.
| EVO ICL Lens Implantation Surgery | Cataract Surgery | |
|---|---|---|
| Purpose | Myopia / astigmatism correction | Replacement of a cloudy natural lens |
| Natural lens | Kept in place | Removed |
| Lens position | Added between iris and natural lens | In place of the removed lens |
| Typical patients | People seeking vision correction | People with advanced cataract |
| Removal | Removable if needed | Not applicable |
Who considers EVO ICL
- Thin cornea: people told LASIK/LASEK is not possible
- High Myopiaand would need a large amount of corneal tissue removed
- People uncomfortable with corneal ablation
- People with dry eye who worry about surgery on the corneal surface
Anterior chamber depth, corneal endothelial cell count, pupil size and eye structure must be checked, and some patients are found unsuitable after examination.
EVO ICL Surgery Procedure
At St. Mary's Jin Eye Center the actual surgery time for vision correction is about 10 minutes.
Step 1 · Detailed pre-op exam and lens order
The eye is measured precisely to decide lens power and size, and the lens is ordered. Because it is custom-made, there is a waiting period before surgery.
Step 2 · Topical anesthesia and micro-incision
After anesthetic drops, a small incision is made at the edge of the cornea.
Step 3 · Lens insertion
The folded lens is inserted and positioned in the space behind the iris and in front of the natural lens.
Step 4 · Position check and completion
Lens position and eye pressure are checked, and the procedure is complete.
Non-toric vs. toric
- Non-toric ICL — corrects myopia
- Toric ICL — corrects myopia together with astigmatism.
The choice depends on the degree of astigmatism and is confirmed in the detailed exam.
Post-operative care
- Use the prescribed eye drops as directed
- Do not rub your eyes
- Avoid saunas and swimming for the period advised
- Regular checks of eye pressure and corneal endothelial cells are important
- Come in immediately if blurred vision, pain or redness appears suddenly
EVO ICL — frequently asked questions
Can I feel the lens inside my eye?
When properly positioned, there is no foreign-body sensation.
What if I develop a cataract later?
The ICL can be removed and cataract surgery performed. This is one of the differences from corneal surgery.
Do I have to keep the lens for life?
It can be removed or exchanged if necessary.
How do I know which vision correction surgery suits me?
It is decided from corneal thickness, prescription, corneal shape, anterior chamber depth and dry-eye status. It cannot be decided without an exam; we choose together in consultation.
ICL consultation at St. Mary's Jin Eye Center, Gangnam Station
St. Mary's Jin Eye Center is at 337 Gangnam-daero, Seocho-gu, Seoul — a 5-minute walk from Gangnam Station Exit 5. EVO ICL exams and consultations 02-577-7782 or request it through online booking.
