What is Femto-Lasik?

Femto-Lasik or Z-Lasik is the most efficient technology currently available within the field of laser eye surgery. Lasik stands for ‘laser-assisted in situ keratomileusis’ – the method involved in this type of procedure. Femto represents the technology, in this case the most recent type of laser: the Femtosecond.

The Femtosecond laser method involves the cutting of a microscopically thin flap on the surface of the cornea, after which the Excimer laser is used to correct any existing refractive errors. With Femto-Lasik, we can easily and successfully treat eye dioptre prescriptions between -12 and +6.

Say a rapid farewell to your glasses, make a no-strings attached appointment today.

The Focus Eye Clinic uses the Wavelight EX500 Excimer laser and the Ziemer Z8 Femto laser. Both of these devices are considered state-of-the-art.
The combination of both of these devices guarantees predictable and reliable results and extreme precision using a quick, painless and safe technique.

Advantages of Femto-Lasik

  1. Optimal safety :

    Highly reduced risk of complications when cutting the corneal flap.
    Reduced risk of infection and inflammation
    Larger treatable surface for increased stability
    Reduction in retreatment rates

  2. Thinner flap:

    The Femto-Lasik allows for such a thin, uniformly cut corneal flap that complications are practically non-existent. With these thinner flaps, more corneal tissue is left behind, meaning not only an increase in long-term corneal stability, but also the opportunity to correct higher refractive errors.

  3. Even flap thickness:

    When using the Femto-Lasik, the surgeon knows beforehand which form, thickness, measurements and capacity each flap entails. This is an important issue when considering treatment for higher refractive errors. When using a scalpel, a surgeon can only know how the flap will look after the cut has been made.

  4. Other benefits:

    Eyeball measurements are of little importance for Femto-Lasik laser eye surgery.
    You will heal in a shorter span of time and your sight will improve much more quickly.
    Visual results are excellent.
    During the procedure, the Femto-Lasik laser exercises less pressure on the eye. This means the patient will experience very little discomfort.

Will Femto-Lasik work for me?

Nearly everyone with nearsightedness (myopia), farsightedness (hypermetropia) or astigmatism can be treated using the Femto-Lasik method.

  • You are between 18 and 60 years old
  • You are in good health
  • Refractive errors between -12 and +6
  • Refractive errors have not undergone any changes during the past year

People who suffer from very dry eyes or have thin corneas are often not considered for Femto-Lasik surgery. They would be better served using the alternative but excellent PRK method.

For age related vision problems, otherwise known as presbyopia, Femto-Lasik is not the ideal solution. We would recommend multifocal lens implants.

Treatment should be postponed during pregnancy or when breast feeding. We will not carry out Femto-Lasik procedures on patients with the following pathologies: viral eye infections, herpes, diabetes mellitus, keratoconus and any pathologies requiring cortisone therapy.

Still not sure? Come and have a chat. Make your obligation-free appointment today.

Femto-Lasik pricing

Focus Eye Clinic puts transparent pricing into practice. You pay the advertised price for Femto-Lasik treatment using the latest technology.

Treatment for one eye costs €1,750. Both eyes will cost €3,250. A no-strings pre-treatment consultation with one of our surgeons is completely free.

Femto-Lasik: practical information

The entire Femto-Lasik procedure as carried out at the Focus Eye Clinic – from arrival to discharge – takes approximately 2 hours.

Before the procedure

On the day of your Femto-Lasik procedure we will repeat all preoperative measurements.. You will then be given a light sedative. Your eyes will be anesthetised with a local anaesthetic. There is therefore no need for a full anaesthetic.

During the procedure

Nursing staff will help you onto the operating table situated within the Femto-Lasik treatment room.
They will thoroughly disinfect your anesthetised eyes and cover them with a sterile dressing. Your eyelashes will be moved aside and your eyes once again anesthetised using a local anaesthetic. An eyelid holder will be put into place, making it impossible for you to blink or close your eyes.

Cutting the corneal flap takes just 26 seconds using a device placed directly onto the eye. It is via this device that the Femto Laser forms the flap. Don’t worry: nothing you do can change the position of or adjust this device.

After the flap has been formed the surgeon uses the Wavelight-Excimer laser to treat the refractive error. For this, you will need to look into a fixation light for 1 second; after you have done this the laser will automatically follow the movements of your eye.
Finally, the flap is put back, thoroughly rinsed and pressed into place.

After the procedure

You will be taken to a rest and relaxation area where you will stay for approximately 30 minutes. On the day of the procedure itself you should not drive. Please bring someone with you! We do not recommend your using public transport systems.
Postoperative medication consists of eye drops. You will also receive protective glasses which you are required to wear for the following 24 hours.


You will come for a control visit one day, one week and two to three months after the procedure. These visits are included in the listed price.

What risks?

Femto-Lasik laser eye surgery is safer than daily contact lens use. Currently, the most applicable risk is that of Femto-Lasik retreatment. However, the chance of this occurring is less than 0.5%.

As in all types of surgery there is a limited risk of infection and inflammation. You will receive eye drops and protective glasses to reduce such risk.

Older techniques could sometimes lead to permanent dry eyes. The state-of-the-art Femto-Lasik method, together with sufficient preoperative care, has drastically reduced this risk. Any temporary decrease in tear production can be treated with lubricating eye drops and tear duct (lacrimal) plugs.

There is no risk of decreased night vision. In fact, the opposite is true; laser treatment increases contrast in low light conditions.


What is an Excimer laser?

With the Excimer laser, thin layers of the cornea are evaporated by way of photo ablation.

This makes it possible to:

  • change the corneal profile
  • flatten the cornea in cases of nearsightedness
  • make the cornea more rounded in cases of farsightedness
  • even out the cornea in cases of astigmatism

The newest computer technology can calculate the correct corneal profile automatically, as well as the correct doses of photo ablation. The Wavelight EX500 Excimer laser uses “Perfect Pulse Technology” to guarantee both safety and precision. The 6-sigma tracking system follows all eye movement during the procedure.

Reliability and predictability are guaranteed by way of high resolution calibration for each procedure. Aspheric laser ablation means improved night vision.

How does the Femto-Lasik laser work?

The Ziemer Z8 Femto laser works using the principle of photo disruption: using infrared laser energy, the surgeon creates a pattern of tiny, overlapping spaces immediately under the surface of the cornea. The laser operates at extremely high speeds: impulses of 1 quadrillionth of a second, or 1 femtosecond.

These highly accurate laser impulses split the corneal tissue at a molecular level without creating heat or touching the surrounding tissue. As the laser moves up and down across the eye a complete corneal flap is formed. After the flap has been created the surgeon lifts it with a specially designed instrument. The Excimer laser is then used to shave away thin slices of the cornea and in doing so correct refractive errors. Finally, the surgeon sets the flap back into place.

What are the Femto-Lasik-options: A-Cat, T-Cat and Lasik-Extra?

A-Cat: Femto-Lasik with aberrometry

We now possess sophisticated diagnostic devices which can register extremely subtle refractive errors. These aberrations are so tiny that glasses or contact lenses cannot help. Treatment of specific aberrations (the A-Cat option) can offer more night vision contrast to those people with widened pupils. The surgeon will discuss this option with you should he consider it applicable.

T-Cat: Femto-Lasik with topography

A cornea is usually regular in form (spherical and toric). For some patients, such as those with keratoconus, asymmetrical or irregular astigmatism can only be seen when using topographical imaging. If the surgeon thinks you are a candidate for topography, he will tell you about the T-Cat option.

Lasik-Extra: Avedro

When using Femto-Lasik therapy for hypermetropia and presbyopia, vision can start to decline within a few years. Until recently, this meant retreatment.

Thanks to the Avedro UV Crosslinking technique, retreatment is no longer necessary. With this technique, we treat the eye after the Lasik procedure with UV light to encourage the attachment of collagen fibres onto the cornea. This means that the new corneal form will be stable.