REFRACTIVE DEFECTS


In a healthy eye, the sharp vision is the result of the convergence of light rays in the retina after passing through the cornea, pupil, and crystalline lens. These light rays behave differently depending upon the curvature and thickness of the cornea and the size of the eye.
 
Myopia
In a myopic eye, the curvature of the cornea or the size of the eye is excessive and light rays converge in front of the retina, which results in blurred long distances vision.

Hyperopia
In this defect, light rays converge behind the retina due to the fact that the eye is of a smaller size or it has a too flat cornea, which causes blurred vision too, but in contrast to the myopic eyes, for short distances.

Astigmatism
The astigmatism is originated by an anomalous curvature of the cornea (like the shape of a rugby ball), which makes rays focus in different points of the retina depending of their orientation. This defect results in blurry vision at any distance and it usually has a myopia or a long-sightedness added.



WHAT'S REFRACTIVE SURGERY?

Refractive Surgery is the term used for several procedures designed to treat refractive defects such as myopia, long-sightedness and astigmatism, by means of non or little invasive methods.

 


The technique most frequently used is LASIK (Laser Assisted in situ Keratomileusis) where the light from the excimer laser re-shapes the internal tissue of the cornea to improve the way in which light rays are focused or refracted by the eye eliminating or reducing the refractive error.



FRACTAL LASER OF RANDOM PROJECTION

Dr Simon's high experience in Ophthalmology and his deep study of biomechanics engineering, has enabled the development of a laser that produces better results than other systems: the fractal laser of random projection.

 


Dr. Simon, in his eagerness of innovation and researching, discovered that the laser spot of LASIK technique hits the stroma cornea (as the hits of a hammer), which can cause secondary effects, as for instance corneal opacities or central and lateral islands. This fact lead him to design a laser which emission drops softly (like raindrops).
By means of this technique, design operations can be made since it is possible to know the parts of the cornea that need to be treated to correct the visual defect and consequently, to act just on them. The safety of the procedure is such, that in each laser pulse just a micron layer is removed in a thousandth of a second.

see Lasik details


Advantages of the fractal laser of random projection:
• Accuracy
• Safety
• Flexibility
• It is able to correct higher myopias that other lasers
• Speedy recovery of the vision
• Reduces the need of medicines after the operation
• It is applicable to patients who didn't obtained the desired results when operated on with other techniques


LENTES INTRAOCULARES PRECRISTALINEANAS (ICL)


Una nueva técnica consistente en implantar una lente de contacto en el interior del ojo, delante del cristalino, mediante una pequeña incisión, permite corregir miopias e hipermetropias elevadas mediante una intervención que se realiza con solo unas gotas de anestesia tópica y que se lleva a cabo de forma ambulatoria, sin hospitalización.

ver detalles Cirugía