Everything You Need to Know About Astigmatism

Astigmatism is a visual problem that affects about 60% of the adult individuals. The loss of visual quality is easily detected, which facilitates its treatment.

Know About Astigmatism

Many people have visual problems with which they live daily, and which hamper your everyday tasks. Between them is the astigmatism.

Its incidence varies with age, being that it is a problem quite common in the first months of life (approximately 20%), decreasing to about 5% at school age and in young adults reaches close to 60% of individuals.

It is estimated that, in Portugal, approximately 20% of children and 50% of adults suffer from errors of the refractory, including the astigmatism.

WHAT IS ASTIGMATISM?

The astigmatism is in a error temperature. In other words, it is a change in the physiognomy of the eye that’t interfere in the way the images are formed and are transmitted to the brain.

Is a eye problem very common, and corresponds to approximately 13% of all errors refractive. Other errors refractive also very common are the myopia and the hyperopia.

This problem arises due to a change of the curvature of the cornea, the innermost layer of the eye. The cornea should be perfectly convex but, instead, presents itself uneven, with some areas higher than others. This change is such that, when the images are projected on the retina are distorted by passing through the cornea. This causes them to appear blurry.

HOW IT MANIFESTS ITSELF?

The presence of this problem is manifested by the decrease in the quality of vision, or blurred vision. In small children, can go unnoticed, especially if only one eye is affected.

Children may manifest fatigue, headache, decrease in your academic performance and tend to be too much of television. However, in most cases, this is not the case. For this reason, it is essential to perform an eye screening by the age of 3 years old. This screening will allow to assess the presence of errors refractivos and proceed to its correction, if necessary.

The adults more readily perceive the change in ma your vision and verbalizing the difficulty of the visual that you have, so that it is easier to detect the problem. Astigmatism affects vision at both near and far.

WHAT ARE THE CAUSES?

The cause of astigmatism is not known. Usually, the individual is born with astigmatism, and it is almost always associated with hyperopia or myopia.

Its origin is genetic although, in some cases, can appear after a trauma or eye surgery.

HOW IT IS DIAGNOSED?

The diagnosis of astigmatism is performed in a query of ophthalmology. There is a wide variety of equipment that allow to detect and quantify quickly and efficiently this anomaly both in children and in adult individuals.

In this query of ophthalmology, is evaluated around the eyeball with the aim of studying their characteristics and to discard possible causes of the problem as well as other eye diseases.

AS IT COMES?

The manifestations light of astigmatism that does not interfere significantly in the vision, not to need treatment.

When the problem is more serious, affecting the quality of vision, it is necessary to correct it by resorting to the use of glasses, contact lenses or refractive surgery.

GLASSES

This is the ideal solution for children up to 15 years of age. In individuals over the age of 40 years, it is usually necessary to use a type of lens that correct both the astigmatism as trouble seeing up close. These lenses are called “progressive” since they have different graduations on its surface.

CONTACT LENSES

Contact lenses may be used to correct the astigmatism long as there are no contraindications such as allergy to the same, lack of tears, exposure to smoke and very dry. The use of contact lenses requires that there be hygiene, discipline and accuracy and is critical for the medical monitoring that detects early abnormalities which may result from its use.

There are several types of contact lenses and their selection is made through medical evaluation.

The use of glasses and contact lenses do not cure astigmatism, but they make the error sample temperature caused by the same.

SURGERY REFRACTIVA

This treatment is indicated for persons over 18 years of age and a graduate to be stabilized for more than 12 months. This surgery allows you to shape the surface of the cornea correcting the irregularities of the surface. It is a simple procedure, performed under local anaesthetic lasting about 15 to 20 minutes.

This surgery allows you to recover a normal sight in less than 24 hours. Even before the presence of astigmatism associated with myopia or hyperopia, the surgery allows results safe, reliable, and fast.

INTRAOCULAR LENS

The placement of a lens inside of the eyeball is an alternative to laser surgery. Consists of placing one lens inside the eye which helps to compensate for the astigmatism. The effect is similar to that obtained with contact lenses, only in a permanent way.

Problems ophthalmic are very common today and can easily affect the quality of life of the individuals affected. If you think that you are losing quality of vision or suffer from astigmatism, the ideal is to consult a physician ophthalmologist.

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