Excimer Laser

Istanbul

Excimer Laser in Istanbul is available at 6 hospitals in the Voumed network.

The excimer laser is a precise, computer-controlled laser system used to correct refractive errors of the eye, most commonly short-sightedness (myopia), long-sightedness (hyperopia) and astigmatism. It works on the cornea, the clear front surface of the eye, gently removing microscopic layers of tissue to reshape it so that light focuses correctly on the retina. It is the workhorse behind most laser vision correction procedures, where its goal is to reduce or remove a person's dependence on glasses and contact lenses. The treatment is fast, carried out under anaesthetic drops, and recovery is generally quick.

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At a glance

Type: ultraviolet refractive laser for corneal reshaping
Used for: myopia, hyperopia and astigmatism
Key benefit: precise, cool tissue removal that reduces the need for glasses and lenses
Anaesthesia: numbing eye drops only
Where it is used: leading accredited eye centres abroad

What it is

An excimer laser produces a beam of cool ultraviolet light at a very specific wavelength. Unlike heat-based lasers, it removes tissue through a process that breaks molecular bonds without burning the surrounding cornea, so each pulse removes an extremely thin, precise layer. The whole treatment is planned and controlled by a computer based on detailed measurements of the eye, and a tracking system follows the eye's tiny movements so every pulse lands exactly where intended. By removing tissue in a carefully calculated pattern, the laser changes the curvature of the cornea and corrects the focusing error.

How it works

After numbing drops are placed in the eye, the surgeon prepares access to the layer of cornea that will be reshaped. In flap-based methods a thin protective flap is created and lifted; in surface methods the outermost layer is gently moved aside. The excimer laser then applies its programmed sequence of pulses to sculpt the cornea, a step that usually takes well under a minute per eye. The protective layer is repositioned, and the cornea heals naturally. Throughout, the laser is guided by the personalised treatment plan and the eye-tracking system, so the patient does not need to hold the eye perfectly still.

What it treats and who it helps

Excimer laser correction is suitable for many adults with stable myopia, hyperopia or astigmatism who wish to depend less on glasses or contact lenses. It helps people whose daily life, work or sport is limited by visual aids, as well as those who cannot tolerate lenses. Candidacy depends on factors such as the strength of the prescription, corneal thickness and shape, and overall eye health, all assessed in a detailed pre-operative examination. The eye specialist uses these results to choose the most suitable technique, or to advise an alternative if laser treatment is not ideal.

Benefits and what to expect

The main benefit is a fast, precise correction that allows many people to see clearly without glasses for everyday activities. Because the laser is cool and computer-guided, healthy tissue is well preserved and treatment is highly accurate. Most people notice clearer vision within a day or two, though surface methods can take a little longer to settle. Temporary dryness, light sensitivity, halos or mild discomfort may occur in the first days and usually fade. The care team provides eye drops and protective guidance, and final vision stabilises over the following weeks.

Frequently asked questions

These answers are general guidance and may vary by provider. Confirm the details with the hospital you choose.

Does the excimer laser hurt?

No. The eye is numbed with drops, so you should not feel pain during the treatment, only mild pressure or awareness of lights. Afterwards a gritty or watery sensation is common for a short while, particularly with surface methods, and is managed with drops.

Will I smell or feel burning?

The excimer laser is a cool laser that removes tissue without heat, so it does not burn the eye. Some people notice a faint odour during treatment, which comes from the tissue being vaporised and is harmless.

How long does the laser part take?

The actual laser reshaping usually takes only seconds to under a minute per eye, depending on the strength of the correction. The whole appointment is longer because of preparation, but the time under the laser is very short.

Is the correction permanent?

The reshaping of the cornea is permanent. However, the eye can change naturally over time, so a small number of people may need a touch-up later, and most will still develop the normal age-related need for reading glasses.

Can both eyes be treated on the same day?

In most cases yes, both eyes are commonly treated in the same session. Your eye specialist confirms this based on your examination and the chosen technique.

Who is not suitable for excimer laser treatment?

People with very thin or irregular corneas, an unstable prescription, certain eye conditions or some general health issues may not be ideal candidates. A thorough pre-operative assessment identifies this and helps the specialist recommend the safest option.