Laser vision correction

The eye is a complex optical system by which we get the most information from our environment. Light rays reflected from objects all around, entering the eye are refracted and focused on the retina. Such is the situation in a normal (emmetropic) eye. But the eye has its imperfections. In some patient we diagnose the conditions we call refractive errors such as nearsightedness (myopia), farsightedness (hyperopia) and astigmatism. They are corrected by means of glasses, contact lenses, and nowadays with laser treatments. Laser correction using excimer laser is the most advanced and successful refractive manipulation.

What is laser correction?

Laser vision correction is a procedure designed to eliminate the dependence of man on glasses or contact lenses. The eye surgeon using the excimer laser adjusts the shape of the cornea, thus eliminating refractive errors of the eye (nearsightedness, farsightedness and astigmatism).

лазерна корекция на зрението клиника ДЕН София очен лекар лечение диоптри премахване на очила

Is it possible to make my laser vision correction?

Every candidate for laser correction must meet several mandatory requirements. He/she must:
– Be at least 18-years old;
– Not have changes in diopters for at least one year;
– Be willing to get rid of glasses.

Patients who have an eye infection or injury, and certain degenerative, and autoimmune diseases are not suitable for this procedure.
Your ophthalmologist will give you t
he most accurate and reliable answer to the question whether you can undergo this medical procedure based on a comprehensive eye examination in Eye Clinic DEN.

The laser correction itself

The main types of refractive laser correction are PRK (Photorefractive Keratectomy) / LASEK (Laser Assisted Epithelial Keratomileusis) / TransPRK  (Transepithelial Photorefractive Keratectomy). Each of these procedures can be performed as standard or customized correction.

PRK (photorefractive keratectomy) / LASEK (Laser Assisted Epithelial Keratomileusis) / TransPRK  (Transepithelial Photorefractive Keratectomy) are types of surface correction in which the excimer laser evaporates at the surface of the corneal stroma. The difference is in the way that the corneal epithelium is peeled off. In LASEK the epithelium is moved away and after laser ablation it is returned to its place. In PRK the epithelium is removed completely. TransPRK is a non-contact method which allows removal of the epithelium and vision correction to be carried out simultaneously and entirely by the laser in a single step. The innovative technology of eye clinic DEN’s excimer laser  allows us to do the so called SmartSurfACE laser correction which combines Trans-PRK with the revolutionary SmartPulse. In this way the recovery period is shorter and more comfortable for the patient .

LASIK (Laser-Assisted In situ Keratomileusis) is a lamellar refractive laser manipulation in which excimer laser ablation is performed in lamellar corneal flap. Lamellar flap is made with microkeratomes or a femtosecond laser.


To determine whether a patient is a good candidate for laser correction with excimer laser, we need to make a thorough eye examination. If you wear soft contact lenses you should stop wearing them two weeks before the initial examination, and if you wear rigid contact lenses – four weeks before the examination. This is necessary in order to restore normal corneal status and not to compromise the examinations.

On the day of the procedure

On the day of manipulation we recommend not to use makeup, perfume, deodorant and face cream or any cosmetics and detergents on your face. The laser correction lasts about 10 minutes, and the entire stay at the clinic is about 60-90 minutes.


Studies show that over 95% of patients the result is excellent and does not need further adjustment. In very rare cases (at higher diopters) may need to wear glasses, but with a much smaller diopter or you will be offered re-procedure of the same eye.

The decision to have laser correction should be taken after you have been well informed. Successful laser correction is based on professionalism, responsibility and cooperation between the patient and the doctor.

Microsurgery, laser vision correction…+359 2 983 20 28