Femtosecond laser cataract surgery

Cataracts are a total or partial opacity of the lens that prevents seeing well and occur when it loses its natural transparency. The crystalline is the natural lens of the eye with refractive ability that focuses objects and allows the passage of light.

Why do cataracts occur?

Cataracts occur mainly as a result of age. In general people over 65 have some degree of cataract. Although other factors that influence the appearance of cataracts may be: diabetes, eye inflammation or even genetic inheritance.

Treatment of cataracts

The femtosecond laser is the new non-invasive technique used for the operation of cataract surgery. Its use makes the procedure easier, more accurate and safer than the traditional method.

The laser is connected to the computer in which the surgeon previously designs the microincisions. This new technique fragments cataracts, reduces the risk of infection, improves the positioning of the intraocular lens and improves the correction of astigmatism.

The femtosecond laser is an instrument with infrared wavelength of enormous precision that works in millionths of a second. Another of its characteristics is that it does not produce cut of the fabrics, but separates them applying the minimum doses of energy to produce a separation of the molecules.

It is also used to operate myopia, farsightedness and astigmatism.

What is this intervention?

The operation of cataract by means of this laser consists of the following steps:

  1. Incision: thanks to the laser, we can indicate the size, shape and position of the incisions to be made, always inducing the lowest degree of astigmatism possible. It is also taken into account for the calculation of the intraocular lens since the incisions are the same.
  2. Capsulorrexis: with the laser you can decide in real time the size and position of the capsulotomy and thus be able to perform the one that best fits the patient.
  3. Fragmentation of the crystalline: fragments so that it is easier after the removal of the cataract. As the lens has previously been fragmented, less ultrasound will be used in the following steps, being very positive for the patient’s cornea.
  4. Aspiration of the lens
  5. Implantation of the intraocular lens.


As can be observed, the laser provides significant and positive differences in the first three phases of the operation.

The treatment can take about 10 – 15 minutes in total. After the operation, the patient can perform normal life without glasses. The only thing is that you can not operate both eyes at the same time, it is normal to operate first one and the next week the other, once verified that there is no evidence of infection and that everything is correct.

At the Ophthalmology Unit of Vithas Xanit International Hospital, our professional surgeons use the femtosecond laser technique for the operation of cataracts in their day to day life, as it is a very common operation. If you have any questions or concerns, do not hesitate to contact us by phone (+34) 951 012 242.