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Refractive surgery

What is myopia?

Myopia is a refractive error that manifests itself when distant objects are projected at a point in front of the retina, instead of on it. As a result, a distorted perception of the image occurs and, therefore, vision is blurred and poorly defined.

People who suffer from myopia are characterised by alterations in the different structures of the eye such as its corneal curvature, the optical power of its lens (excessive power) or the size of its eyeball (excessive length).

Myopia is the most common visual defect among people under the age of 45 and can be associated with other refractive errors, such as astigmatism (myopic astigmatism) and presbyopia or eyestrain.

NORMAL EYE

Ojo normal

MYOPIA

miopia clínica oftalmedic salva

Causes of myopia

Efectos genéticos miopía

GENETIC

Myopia has an important hereditary component, although it can appear in people with no family history.

Patológico miopía

PATHOLOGICAL

Certain diseases can trigger the appearance of this refractive error temporarily or permanently.

Causas miopía refractiva

ENVIRONMENTAL

Tasks that require continuous close focus or poorly lit environments can lead to vision problems.

Symptoms of myopia

The main symptom of the patient with myopia is that they have poor distance vision and yet optimal near vision. Other symptoms you may suffer from are eye strain, headache, difficulty concentrating, permanent dry/itchy eyes, etc.

Myopia at different ages

La miopía en la infancia

Infancy

Symptoms can occur from an early age. Therefore, it is advisable to have a complete ophthalmological check-up from the age of 3-4 to detect or rule out latent visual alterations.

La miopía en la adolescencia

Adolescence

Myopia can advance during this stage of intense body development. In general, it tends to stabilize after the age of 20, although its evolution will vary depending on each particular case.

La miopía en la edad adulta

Adulthood

Myopia can also occur in adulthood. Although some people prefer optical correction, refractive surgery offers a variety of options to eliminate dependence on glasses and/or contact lenses.

Types of myopia

Two types are usually distinguished:

  • Simple myopia (less than 6 diopters).
  • Magna myopia or high myopia (greater than 6 diopters).

The diagnosis of myopia magna, which is considered a visual pathology, will be determined by possible alterations in the fundus of the eye, especially at the level of the retina, as it can compromise the vision of those who suffer from it.

A myopic eye above normal can be predisposed to pathologies such as retinal detachment or glaucoma.

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