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The myopia is a disorder of view This occurs because the rays of light that come from objects located at a certain distance from the eye focus on a point before the retina. Thus, since the rays do not converge on the retina itself, a defect in eye refraction .

Who has myopia fails to correctly focus on the elements that are far apart . This causes the sharpness of vision to be reduced, causing irritation of the eye to headache , going through discomforts of various kinds.

The degree of myopia is expressed in diopters . This is called the power unit of a lens which is equivalent to the inverse of the focal length of a meter. The simple myopia It is one that evolves until approximately 24 years and its graduation is less than 6 diopters . The progressive myopia or pathological instead has a graduation greater than 6 diopters and can cause various additional complications to the vision defect.

An individual with myopia greater than 6 diopters has a greater predisposition than the rest of the people to suffer waterfall , glaucoma , Fuchs stain or detachment of retina , for example. Therefore, before such a picture, it is important to go to the ophthalmologist periodically to perform different exams.

As for the treatment of myopia, the most common is the use of divergent lenses . By interposing contact lenses or glasses between the retina and the distant object, the focus defect is resolved. Also, in some cases, you can resort to surgery with To be to modify the dioptric value of the cornea.

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