The pterygium is a growth and inflammation of the conjunctive one, which is a transparent weave that covers the external surface with the eye. The patients who suffer it mainly report a growth of a €œfabric€? in the eye of the nasal side.
In the cases of pterygium it is common that the patient needs to frequently lubricate his eyes with artificial tears and that she uses lenses with filter for the violet extreme radiation.
It is a modern ambulatory treatment to reinforce the cornea. It consists of applying a dose of riboflavin along with a radiation of inoffensive light ultraviolet for the eye that altogether forms a chemical reaction to fortify corneal fibers and to avoid or to decelerate the corneal deformation by keratoconus or another type of corneal diseases.
It is a disease of the cornea in which a deformity exists or ectasia of the previous and later surface. This deformity produces the thinning of the corneal weave and lies down to generate irregular astigmatisms which must of being dealt initially with contact lenses of special designs.
In advanced cases surgeries exist that improve the condition of the patient as they are it you implant them of intraestromales ring and transplants of cornea.
Inside the eye we have a called lens crystalline, when this lens loses optical his propiedasdes and he becomes opaque denominates Cataract which can be developed consequently to accumulation of violet extreme radiation, blows, consulmo of some medecines among others.
In initial cases the cataract can be dealed with lenses (spectacles or contact) but in moderate cases or advanced the surgery is necessary.
The surgical treatment of the cataract consists to retire the opaque crystalline by a denominated method facoemulsificaciÃ³n in which the cataract by means of ultrasound radiation dissolves and later an intraocular lens is implanted that allows the patient to return to see with normality.
At present the intraocular lenses have designs that allow to correct the majority of visual problems and multifocal lenses even exist so that the patient can recover so much by far the vision as the one close by.
The refractive surgery, more well-known as LASIK by its abbreviations in English, is a method in which by means of a ray laser the ocular surface is corrected to correct the visual problems as the myopia, hyperopiums and astigmatism.