Refractive laser surgery to correct vision problems

Refractive laser surgery corrects defects that affect vision such as nearsightedness, farsightedness, presbyopia or astigmatism. This surgical procedure is increasingly being performed in just a few minutes, under local anaesthesia. Explanations with Dr. Arthur Ferrero and Julien Doat, ophthalmologists at the Clinique de Lyon (Ramsay Santi), located in Saint-Jean (Haute-Garonne).

Refraction is a phenomenon characterized by the passage of light from one medium to another. When light enters the eye, it passes from the atmosphere into the eye, so the medium changes and thus undergoes this phenomenon of refraction. In the case of visual disturbances, the eye is not able to focus properly and therefore sees more or less blurred images. Then it carries what is called a refractive defect. Refractive disorders are more commonly known as myopia (distant vision defect), hyperopia (near vision defect), presbyopia (difficulty with near vision) and astigmatism (distal and near vision defect).

Refractive laser surgery for whom?

Refractive laser surgery is especially indicated for the treatment of nearsightedness, astigmatism, presbyopia or farsightedness, When the patient’s visual disturbance has been stable for at least two years. A quick and painless procedure is the use of a laser (LASIK, the most commonly used, or PKR, the less invasive) to modify the curvature of the cornea, thereby improving the way the eye focuses images. “The main goal of this operation is to allow patients not to wear glasses or contact lenses”Dr. Ferrero says.

However, this type of surgery is contraindicated in patients under 18 years of age. “And also in patients with eye diseases: corneal malformation, very thin or irregular cornea, glaucoma, retinal diseases …”The specialist adds.

Laser refractive surgery course

During refractive surgery, an ophthalmologist applies numbing drops to the affected eye. Next, he directs the patient to a machine where he receives a laser beam first (to prepare the eye for refractive therapy) and then a second aimed at correcting the visual disturbance.

During refractive surgery, the movement of the eye is analyzed throughout the operation by a system that ensures that the laser is applied in the right place, “Even when the eye is moving, this guarantees excellent results and makes the surgery safer.”in detail ophthalmologists.

The time of the procedure can vary according to the degree of correction for each individual but, on average, the total duration of the intervention is twenty minutes for both eyes. After the operation, the patient can go home directly.

Postoperative follow-up after refractive surgery

The postoperative period is not disabled. After the procedure, patients usually experience temporary dry eyes that are treated by applying eye drops. “Visualization of luminous halos is also possible on an ad hoc basis”Dr. Julian Duat says: Patients can usually resume their daily activities after a week of recovery.

Vision may fluctuate for a few months after surgery, especially after the PRK technique. This is due to laser-induced corneal reshaping.

It must also be emphasized that any surgery involves risks. In the case of refractive laser, the latter is minimal because before the operation a detailed preoperative assessment is carried out with several examinations that ensure the effectiveness and safety of the procedure.

New eye laser at Clinique de l’Union

Since 2021, the Clinique de l’Union has been equipped with the WaveLight® laser system from the Alcon Laboratory. This device incorporates the latest technology to ensure more reliable, faster and safer processing. Its superior speed, multidimensional vision manager, laser accuracy and online stability measurement (keratometry) allow ophthalmologists to perform more specific refractive surgeries. It also significantly reduces recovery time and improves postoperative outcomes.Dr. Julian Duat says:

The arrival of this laser in the health facility corresponds to the arrival of Dr. Arthur Ferrero and will soon allow many other eye surgeons to be welcomed.

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