The glaucoma is an illness of the eyes that characterises generally by the pathological increase of the intraocular pressure, by fault of drainage of the aqueous humour and has like common final condition unaneuropatía optical that characterises by the progressive loss of the nervous fibres of the optical nerve and changes in his appearance.
The surgery refractiva is a set of surgical procedures that modify the anatomy of the eye, especially the cornea, deleting the defects refractivos of the myopia, hipermetropía and astigmatism so that it was not necessary the use of glasses or lens of contact.
The retina is a sensitive tissue to the light situated in the inner surface of the eye. The light that incide in the retina unchains a series of chemical and electrical phenomena that finally translate in nervous impulses that they are sent to the brain by the optical nerve.
The eye is a sensory organ complex and highly specialised that it can suffer pathological processes interns and external As any another splits of our organism: infections, inflammations, tumors, hypertension, etc.