Femtosecond laser wikipedia

This type of laser allows the surgeon to adapt a personalized treatment to the problems and ocular characteristics of each patient. It also has a high precision in each microincision which allows the results to be very predictable.

It also increases visual quality, i.e., it is very unlikely that the appearance of high order aberrations in vision will occur and allows interventions in patients suffering from high degrees of myopia.

The microkeratome is an automatic instrument that makes a cut in the cornea to create the corneal flap. This device cuts a thin layer of ocular tissue that belongs to the outer surface of the cornea.

These two types of tools are used for surgeries of Myopia, Hyperopia, Astigmatism and some cases of Presbyopia. The purpose of the two types of surgery is the same, the difference lies in the advancement of technology, as the Femtosecond has replaced the Microkeratome.

What is a femtosecond laser?

It is a device capable of emitting ultra-short pulses of laser light, lasting less than a picosecond, in the order of femtoseconds (1fs= 10-15 s). These pulses are emitted at a wavelength of 1053 nm, which allows them to pass through the transparent tissues of the eye.

What is the microkeratome?

The microkeratome is an automatic instrument that makes a cut in the cornea to create the corneal flap. This device cuts a thin layer of ocular tissue that belongs to the outer surface of the cornea.

What is Photodisruption?


It is like a plasma ablation that is achieved with higher energies, giving rise to shock waves. These waves are the ones that act on the tissues or bodies causing their perforation and/or fragmentation2 .

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Femtosecond laser advantages

In this refractive surgery technique for the correction of nearsightedness, farsightedness and astigmatism, the laser can be used to help carve the corneal flap under which the Excimer laser will strike.

Yes, the initial symptoms of keratoconus are very subtle and go unnoticed by the patient. That is why annual ophthalmologic check-ups will allow an early diagnosis and therefore an early therapeutic attitude, thus avoiding the risk of associated complications.

When a corneal deformity occurs, patients with keratoconus usually have significant astigmatism, which is one of the warning signs that should make us suspect the disease.

Keratoconus is a progressive pathology and not the same in all individuals. Depending on the moment at which it is detected, it will be possible to slow down the disease to a greater or lesser extent, and a combination of several treatments may be needed to achieve this purpose.

Yes, due to the high refractive defects it produces (high and irregular astigmatism), correction with glasses or contact lenses often fails to provide the patient with adequate visual quality. In the clinic, we have a personalized contact lens service to give the patient the best quality of life.

What element is used in the excimer laser?

A complex in chemistry is a structure consisting of a central atom or molecule connected to other atoms or molecules. The typical excimer laser uses a combination of an inert gas such as argon, krypton or xenon, with a reactive gas.

Who invented the laser for vision correction?

Origins. The Spanish ophthalmologist and resident in Colombia, Jose Barraquer, developed the techniques of microkeratotomy and keratomileusis. In his clinic he cut very thin corneal segments (up to one hundredth of a millimeter) in order to alter the shape of the cornea.

What is the difference between Lasik and lasek?

LASEK eye surgery offers a safe and effective alternative to LASIK, but is usually performed only if you are not a good candidate for LASIK eye surgery, which offers faster visual recovery and minimal discomfort.

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Femtosecond laser price

Scientific progress in medicine is very intense but there are few occasions when we can witness a true technological revolution. However, the introduction of the femtosecond laser seems to be achieving this, and in a particularly sensitive field: eye surgery. The idea of complex surgery performed without a scalpel is bound to appeal to both surgeons and patients, yet it is still relatively little known.

Many patients believe that surgery to correct nearsightedness, farsightedness or astigmatism is all laser surgery. However, a critical part of the surgery was until now performed by cutting with a metal blade to lift a thin sheet of corneal tissue called a “flap”. The results depended largely on the quality of the cut made. Although it was a safe surgery, there were logically possible complications associated with the use of these blades.

Indeed. There are many scientific articles demonstrating the benefits of this technique. To cite one example, a well-known study promoted by the U.S.A. Navy considered this technique to be safer, more effective and appropriate for military personnel, especially for pilots and even astronauts.

What is laser surgery called?

A surgical procedure in which a laser beam is used to make bloodless cuts in tissue or to remove a superficial lesion, such as a tumor. Also called laser surgery.

What is refractive surgery?

Refractive surgery groups a series of surgical techniques that treat the eye and whose objective is to eliminate one or more refractive defects of the eye (such as myopia, hyperopia, astigmatism, and even presbyopia), that is, the goal of the surgery is to eliminate the need to wear glasses or contact lenses.

How does an excimer laser work?

How does the excimer laser work? The laser allows us to reduce the diopter of the eyes, modifying the curvature of the cornea, by means of an ultraviolet light, invisible and cold that, instead of cutting or burning, creates enough energy to separate the molecules of the tissues.

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Femtosecond laser opinions

The total treatment can take about 3 minutes, a much shorter intraoperative time than with the usual techniques (phacoemulsification), also allowing, together with the implantation of multifocal lenses, our patients to live a normal life afterwards without glasses, neither near nor far away.

In cataract surgery, the surgeon must make a circular opening to access the lens and remove it; the precision of this incision allows the surgeon to place the new artificial lens just in the right place, so it has to be of perfect shape and dimensions.

With the Catalys femtosecond laser we are able to improve our refractive prediction in the patient, leaving more patients without glasses, increasing our safety and efficacy with lower complication rates and an early recovery.

The surgeon does this in a second phase of the surgery with ultrasound. Having fragmented it with the laser we will use less energy which means less trauma to the eye, as well as a faster recovery.