This first-generation procedure can be used to correct myopia and astigmatism, and is currently used on patients with thin corneas in particular.

At a glance

  • Tried-and-tested technique
  • Procedure primarily intended for thin corneas
  • Gradual recovery: several days
  • Rapid procedure: both eyes operated on in one day

About PKR treatment

PRK (photorefractive keratectomy) is a technique which involves removing the top layers of the corneal epithelium and then reshaping the cornea using an excimer laser. It is the preferred treatment in patients with thin corneas.

This procedure does not require a corneal flap to be cut, unlike LASIK. There are two methods for removing the epithelium:

  • the ‘manual’ technique, where the epithelium is removed (scraped) using a brush after application of a diluted solution
  • the ‘all-laser’ technique, or ‘transepithelial PRK’, where the epithelium is removed using an excimer laser.

It is up to the surgeon and patient to decide whether to opt for the manual or all-laser technique.

Troubles de la vision traités

Vos questions sur le traitement PKR

Do both eyes have to be operated on in one day?

That depends on the technique and on the surgeon. When using traditional PRK, it is generally preferable to wait 1 month before operating on the second eye. However, in the case of transepithelial PRK, both eyes can be operated on in the same day.

Is the operation painful?

During the procedure, anaesthetic drops are placed in the eye in order to numb the surface of the cornea for the entire duration of the operation. After the procedure, PRK patients may experience some pain for the next 24 to 48 hours. This pain seems to be less severe after transepithelial PRK.

Will I be eligible for sick leave from work?

Yes, you will be given a medical certificate granting you 5 days of sick leave. However, depending on the nature of your work and how comfortable you are, this period can be extended by several days.

The SMILE technique can be used to correct myopia and astigmatism at the same time, whilst leaving the surface of the cornea essentially intact.

The femto-LASIK technique combines femtosecond laser and excimer laser treatment in order to remodel the cornea.


The LBV technique involves applying the principle of monovision, in addition to which a corneal profile is established in order to create depth of field and thereby improve mid-field vision.


The ICL technique involves implanting an intra-ocular lens inside the eye, behind the iris and just in front of the lens.

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