Why Do We Refuse 1 in 4 Patients? Endothelial Counting, Guardian of Your Safety

At FLAAK, approximately 25% of keratopigmentation candidates are declined. In a field where most clinics accept virtually anyone willing to pay, our refusal rate is our proudest safety metric. The reason: the endothelial cell count.

What is the Endothelial Cell Count?

The corneal endothelium is a single layer of cells on the inner surface of the cornea. These cells are responsible for maintaining corneal transparency by pumping fluid out of the cornea. Without healthy endothelial cells, the cornea swells and becomes cloudy, impairing vision.

The critical detail: endothelial cells do not regenerate. You are born with approximately 3,500-4,000 cells per square millimeter. This number naturally decreases with age. Once cells are lost, they cannot be replaced.

Why It Matters for Keratopigmentation

Any procedure involving the cornea — including keratopigmentation — can potentially affect endothelial cell density. While keratopigmentation is a superficial stromal procedure (not touching the endothelium directly), maintaining an adequate safety margin is essential.

If a patient’s endothelial count is below the safety threshold, performing keratopigmentation could reduce the safety margin to unacceptable levels. This is why FLAAK measures endothelial cell density before every procedure and declines patients who do not meet the criteria.

The FLAAK Safety Threshold

FLAAK’s endothelial cell count threshold is set above the minimum required for corneal health. This conservative approach means that even after the procedure, patients retain a substantial safety margin of endothelial cells.

Who Gets Declined?

• Patients with naturally low endothelial cell counts (normal variation)
• Patients with prior eye surgeries that reduced cell density
• Patients with certain corneal conditions affecting endothelial health
• Patients whose age-related cell loss has reached the safety threshold

The Measurement Process

Endothelial cell counting is performed using a specular microscope — a non-invasive imaging device that photographs the endothelial cell layer. The measurement is painless, takes seconds, and provides precise cell density data. At FLAAK, this examination is included in the consultation fee and is never optional.

What Happens If You Are Declined?

If your endothelial count is insufficient, FLAAK will honestly inform you that the procedure cannot be safely performed. You will not be charged for the procedure, and the ophthalmologist will explain the findings and any alternative options that might be appropriate for your situation.

Why Other Clinics Skip This Step

The endothelial cell count requires expensive equipment, specialized knowledge, and — most importantly — the willingness to turn away paying patients. Clinics that skip this step do so because refusing 25% of patients is bad for revenue. At FLAAK, safety is not negotiable.

A Refusal Rate We Are Proud Of

Our 25% refusal rate is not a limitation — it is a quality guarantee. Every patient who receives keratopigmentation at FLAAK has been verified as a safe candidate through objective medical screening. This is why our complication rate is minimal and our satisfaction rate exceeds 95%.

Start your safe journey: Contact FLAAK via WhatsApp. View results: before and after gallery.

Ready to change your eye color permanently? Contact FLAAK via WhatsApp for your free consultation.

Medical Safety of Keratopigmentation

Keratopigmentation is a medically supervised procedure performed exclusively by a qualified ophthalmologist in a controlled clinical setting. Unlike cosmetic colored contact lenses that carry daily infection risks, keratopigmentation uses biocompatible pigments that are specially formulated for ocular use. These pigments are inserted into the corneal stroma using a femtosecond laser, ensuring precision at the micron level. The procedure has been refined over more than a decade of clinical research and is now considered one of the safest approaches to permanent eye color change.

Before the procedure, every patient undergoes a comprehensive eye examination including corneal topography, pachymetry, and intraocular pressure measurement. This ensures that only suitable candidates proceed. The biocompatible pigments used have been tested extensively in European clinical trials and show excellent long-term stability with no migration or degradation. Post-operative recovery is typically swift — most patients resume normal activities within 48 to 72 hours. The ophthalmologist provides a personalized follow-up protocol to monitor healing and ensure optimal results.

Permanent Results You Can Trust

One of the most compelling advantages of keratopigmentation is that it delivers a permanent result. The pigment is placed within the corneal tissue itself, which means the new eye color does not fade, shift, or require replacement. Whether you choose a natural blue, green, hazel, or a more vibrant shade, the color remains consistent for life. Our clinic in Paris has performed hundreds of successful procedures, and patients consistently report high satisfaction rates both aesthetically and in terms of visual comfort.

The procedure is priced at 5,500 EUR for both eyes, which includes the initial consultation, the procedure itself, premium biocompatible pigments, and all follow-up appointments. This transparent pricing means no hidden costs. Compared to a lifetime supply of colored contact lenses — which can cost thousands of euros over the years while carrying ongoing infection risks — keratopigmentation represents both a safer and more cost-effective choice. Every procedure is performed by a board-certified ophthalmologist with specialized training in corneal surgery.

Frequently Asked Questions

Is keratopigmentation painful? The procedure is performed under topical anesthesia (eye drops), so patients feel no pain. A mild sensation of pressure may be felt, but the actual treatment takes approximately 15 to 20 minutes per eye. Most patients describe the experience as comfortable.

How long do the results last? The results are permanent. Unlike contact lenses that need to be replaced regularly, the biocompatible pigments used in keratopigmentation are designed to remain stable within the cornea indefinitely. Clinical follow-up studies spanning over 10 years confirm long-term color stability.

Can I get a free consultation? Yes. We offer a complimentary initial consultation at our Paris clinic where the ophthalmologist evaluates your candidacy, discusses your desired eye color, and explains every step of the procedure. You can also reach us directly via WhatsApp for a free consultation to get answers to your questions before visiting the clinic.

Safety and keratopigmentation protocol

Keratopigmentation is performed by a qualified ophthalmologist in a sterile medical environment in Paris. The procedure uses the VisuMax Zeiss femtosecond laser, a cutting-edge technology that creates an intracorneal tunnel with micrometric precision. The biocompatible pigments used are CE-certified and specifically designed for ophthalmic use, ensuring optimal tissue tolerance.

Unlike iris implants or permanent colored contact lenses, keratopigmentation does not affect the internal structures of the eye. The pigment remains confined within the corneal thickness, with no contact with the crystalline lens or the anterior chamber. This approach significantly minimizes risks of intraocular inflammation, glaucoma, or cataracts. The entire procedure takes approximately 30 minutes under topical anesthesia, completely painless.

A comprehensive preoperative assessment including corneal topography, pachymetry, and fundus examination is systematically performed before any intervention. This assessment confirms patient eligibility and allows personalization of the desired eye color change through a realistic 3D simulation.

Results and post-operative care

The permanent results of keratopigmentation are visible within the first hours following the procedure. The new eye color achieved is stable, natural-looking, and lasting. Patients notice an immediate change that fully stabilizes within 2 to 4 weeks, once corneal healing is complete.

Post-operative follow-up includes consultations at D+1, D+7, D+30, and D+90. Antibiotic and anti-inflammatory eye drops are prescribed for 2 to 4 weeks. Daily activities can be resumed the next day, with simple precautions: avoid eye makeup for one week and wear sunglasses outdoors.

The before after results speak for themselves: thousands of satisfied patients worldwide have benefited from this technique. The keratopigmentation fee is 5,500 EUR for both eyes, including the preoperative assessment, the procedure, and complete follow-up care. A free consultation allows you to evaluate your eligibility and visualize the expected outcome.

Frequently asked questions about keratopigmentation

Is keratopigmentation painful? No. The procedure is performed under topical anesthesia with eye drops. Patients feel slight pressure during VisuMax Zeiss laser application but no pain. Mild discomfort may persist for a few hours after the operation.

How long do results last? Keratopigmentation delivers permanent results. The biocompatible pigments are encapsulated within the cornea and do not degrade over time. Unlike colored contact lenses, no daily maintenance is required.

Who is eligible for this procedure? Any adult with healthy eyes, after validation by the ophthalmologist during the preoperative assessment. Contact lens wearers must remove them at least 48 hours before the consultation. Patients who have undergone refractive surgery (LASIK, PRK) may be eligible after evaluation.

Why choose Paris for keratopigmentation? Paris is home to Europe’s leading keratopigmentation specialists. Our center exclusively uses the latest generation VisuMax Zeiss and certified biocompatible pigments. The all-inclusive fee is 5,500 EUR, with installment payment options available. Book a free consultation with no commitment today.

Safety and keratopigmentation protocol

Keratopigmentation is performed by a qualified ophthalmologist in a sterile medical environment in Paris. The procedure uses the VisuMax Zeiss femtosecond laser, a cutting-edge technology that creates an intracorneal tunnel with micrometric precision. The biocompatible pigments used are CE-certified and specifically designed for ophthalmic use, ensuring optimal tissue tolerance.

Unlike iris implants or permanent colored contact lenses, keratopigmentation does not affect the internal structures of the eye. The pigment remains confined within the corneal thickness, with no contact with the crystalline lens or the anterior chamber. This approach significantly minimizes risks of intraocular inflammation, glaucoma, or cataracts. The entire procedure takes approximately 30 minutes under topical anesthesia, completely painless.

A comprehensive preoperative assessment including corneal topography, pachymetry, and fundus examination is systematically performed before any intervention. This assessment confirms patient eligibility and allows personalization of the desired eye color change through a realistic 3D simulation.