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News » Pterygium: nature, causes, symptoms and treatment
Pterygium: nature, causes, symptoms and treatment
Among the diseases that can affect the eyes, it includes pterygium.
this disorder consists in an abnormal growth of the conjunctiva that develops on the cornea (the front of the eye and transparent) From greek pterugion (small insect wing).
It is a real "skins" that goes to form just in front of the colored part of the eye. It can get to reach the pupil, thereby interfering with vision. In this condition, the cornea tends to become whitish, and rich in vessels with an uneven surface. The pterygium tends to grow in a slow but progressive: this is probably its most dangerous aspect.
Main causes of the formation of pterygium
Although the tendency to the formation of pterygium is very often hereditary, one of the most common causes which is the basis of its formation is the frequent and prolonged exposure to sun, wind and dust. It is no coincidence that to be suffering from the disease in question are mainly the workers, especially those working at construction sites or discovered in the streets.
The pterygium then predominantly affects adult subjects and this takes place with greater frequency in the warm and sunny areas.
alarm bells and symptoms of pterygium
In addition to sophisticated instruments such as, for example, the slit lamp, the presence of pterygium on the conjunctival tissue one can also see with the naked eye.
It has a particular shape: a triangle with the apex pointing to the center of the cornea.
Are evident, also, the vessels present in abundance.
The pterygium is very threatening and dangerous: in fact, it may not present specific symptoms.
However, in case of inflammation are usually redness, excessive tearing, burning and the feeling of having foreign bodies in the eye.
Accrescendosi, the pterygium tends to deform the cornea doing arise an astigmatism and, if nothing is done to time, it is due to a reduction of visual acuity same as it tends to cover the pupil, so as to cause diplopia and fogging of the visual field.
Therapy and surgery
The therapy is almost always exclusively surgical, especially when the pterygium presents tendency to progression, threatening a functional impairment and aesthetics.
Surgery is indicated especially in cases of astigmatism can not be corrected, occlusion of the optical zone, the recurrent inflammation and can not be controlled with topical therapy.
It is a relatively simple intervention, very often, is performed with local anesthesia and outpatient surgery.
E \'should do a good action and then manage relapses with ocular microsurgery techniques.
The recurrence is, in fact, very often, the main cause of treatment failure: the fact pterygium can reform with results in terms of relapse, which may even reach 88%. This is the reason why the choice of surgical treatment is still quite controversial.
How to intervene in case of relapse
Scientific studies tend to show that the elective surgery for primary or recurrent pterygium can be represented dall\'autotrapianto the conjunctiva.
It seems that this type of intervention can guarantee fewer relapses.
The use of sunglasses lenses with total protection from ultraviolet rays and the constant use of lubricating eye drops can relieve the symptoms.
These are small devices that, although they can not make the tumor regress, however, are able to prevent the onset of the disease and, in any case, to prevent it from degenerating.