Keratopigmentation (FLAAK) Operational Method
A fast, painless and safe method, without implants or hospitalization, to permanently change your eye color.
Changing Your Eye Color with Keratopigmentation
Do you dream of changing your eye color? Keratopigmentation is today the most advanced, safe and permanent method to achieve a look that suits you.
On this page, discover everything you need to know about this surgical procedure: how it works, who it’s for, its advantages, the process and expected results.
Interested in This Eye Color Change Surgery?

In 2013, Dr. Ferrari, an ophthalmic surgeon who graduated from the renowned University Clinic of Tübingen in Germany, and who specializes in refractive surgery, achieved a world first:
“Changing eye color by FLAAK (keratopigmentation) for aesthetic purposes.”
Since then, surgeons on the Neoris platform have carried out thousands of operations, representing almost 90% of all operations performed worldwide.
There are two other methods for changing the color of the eyes: colored implants and laser depigmentation of the iris. The first technique is extremely dangerous (many cases of blindness have been reported) and the second technique is not very effective. It can also lead to complications, such as glaucoma.
What is FLAAK Surgery (What is Keratopigmentation?)?
Keratopigmentation, also called FLAAK, is a revolutionary technique in aesthetic ocular surgery that allows permanent eye color change. This procedure involves creating a micro-tunnel in the cornea using a femtosecond laser, then inserting pigments compatible with the cornea.
Unlike dangerous colored implants, this method preserves eye integrity while offering a natural and permanent result.
FLAAK – A Fast, Safe and Proven Method
Keratopigmentation (FLAAK) is an innovative surgical technique that allows permanent eye color modification through three key elements:
- High-precision femtosecond laser: Creates a perfectly calibrated micro-tunnel in the cornea
- Safe Neoris pigments: Colorants developed specifically for this procedure
- No hospitalization: Outpatient procedure with same-day return home
This aesthetic surgery consists of creating a circular micro-tunnel in the cornea and depositing a pigment, thus covering the initial eye color. Unlike implant surgery or refractive surgery that corrects visual defects, this revolutionary technique offers a safe and effective alternative to traditional eye color change methods.

PAINLESS • FAST • RELIABLE • INNOVATIVE • PROVEN
Why Choose Keratopigmentation?
👁️ Enhance Your Gaze
Achieve the eye color you’ve always dreamed of with a natural and harmonious result.
👋 Free Yourself from Colored Lenses
No more daily constraints of colored contact lenses, infection risks and recurring costs.
🚫 Avoid Implants
Unlike dangerous colored implants that can cause blindness, this operation doesn’t touch the eye’s internal structures.
Change Your Eye Color Permanently with NEORIS Pigments!

FLAAK Results Are Immediately Visible
The transformation is spectacular right after the procedure. Your eyes immediately take on their new color, with a natural and harmonious appearance. Complete healing occurs over a few weeks, during which the result stabilizes and improves.
NEORIS pigments, specially designed for this ocular application, guarantee stable and lasting color over time, resistant to light variations and environmental factors. This technique (Femto Laser Aesthetic Annular Keratopigmentation) or corneal tattooing, offers optimal safety.
What If You Change Your Mind?
One of the great advances of modern keratopigmentation is its reversibility. Thanks to newly developed techniques and latest-generation NEORIS pigments, it’s now possible to:
- Modify intensity: Strengthen or soften the obtained color through touch-ups
- Change color: Opt for a new shade, even correct heterochromia
- Return to natural color: Return to original color if desired through pigment removal
This flexibility offers complete peace of mind and allows adapting the result to the evolution of your tastes and style.

Eye Pigmentation Procedure Process
This surgical procedure follows a precise and controlled protocol in the clinic:
- Consultation with simulation: Color choice and visualization of expected result with the ophthalmologist surgeon
- Local anesthesia: Total comfort during the procedure in the operating room
- Laser use: Creation of the corneal micro-tunnel with micrometric precision through laser surgery
- Pigment insertion: Placement of NEORIS pigments in the created tunnel
- End of operation in 30-45min: Quick and efficient procedure
- Return home: No hospitalization required
FLAAK (Keratopigmentation) Advantages
Permanent Result
The obtained color is definitive, with minimal risks of fading or alteration over time.
Natural Appearance
NEORIS pigments offer an authentic look that integrates perfectly with your morphology, whether you want emerald green, ocean blue, honey color or any other color.
Painless Procedure
Local anesthesia guarantees total comfort throughout the procedure.
Safe Pigments
NEORIS colorants are pigments specially developed for ophthalmological use.
Possible Reversibility
Modern technique allows modifying or canceling the result if desired, unlike other treatments.

Discover Clinics Near You
Compare prices and make appointments at specialized clinics safely.
Ready to Change Your Look?
Simulate your new eye color for free

01 Honey Gold
For a gentle gaze, choose the dark amber tones of this spicy color that calls to mind cinnamon and the sands of the Sahara.