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Astigmatism

  1. Causes of astigmatism
  2. The symptoms of astigmatism
  3. The treatment of astigmatism
  4. Prevention of astigmatism


Astigmatism

eye disease in which there is impaired vision due to the lack of focus and irregular shape of the cornea.

For normal vision surface of the cornea should be spherical and smooth. Because of improper shape of the cornea shifting the focus, the light rays are refracted differently, and one sees a fuzzy picture. With astigmatism, the image falls on the retina, and in front of or behind it. As a result, the objects become fuzzy, distorted their shape. For example, the patient with astigmatism see the dot as a dash or ellipse.

Depending on the part where the defect occurs, there are two types of astigmatism corneal and lenticular. Lenticular astigmatism is weakly expressed and has virtually no effect on vision, as it has a low refractive power. It is less common, but worse to treat. Signs of corneal astigmatism is more pronounced, deteriorating the clarity of vision. This type of the disease is more common and treated faster.

The origin of the astigmatism can be congenital or acquired. A congenital form of astigmatism in children and is associated with hereditary diseases or negative effects on the fetus during pregnancy. The acquired form occurs in adults and is caused by diseases and injuries of the eye, surgery on the cornea and other reasons.

Astigmatism of the eye can manifest in several forms

  • mixed with this form of astigmatism occurs in the same Meridian

    in another aspect,

  • myopic in one of the main meridians have normal vision and the other myopia (short-sightedness)
  • hyperopic during this astigmatism in one of the main meridians is manifested hyperopia, and another emmetropia.

At the initial stage of astigmatism may not bother humans and appears safe. However, if you run it, the disease can lead to more serious diagnosis of strabismus and drastically reduces visual acuity. Astigmatism brings a lot of discomfort in the form of headaches and burning eyes.

Causes of astigmatism

Until the end of the causes of astigmatism, scientists have not identified. Most often this can be a congenital disorder or external factors. The external factors include various injuries and damage to the eye or surgery for vision correction and other eye diseases. Astigmatism is diagnosed at an early age of 2 years, so often it is a congenital disease. In a family where there were cases of this disease, the likelihood of it approaching one hundred percent.

The most common cause of astigmatism is the irregular shape of the cornea. Less curvature of the lens of the eye. Since the probability of transmission astigmatism is inherited, the child should be examined to exclude the possibility of disease. In the initial stages astigmatism subtle, the patient may feel discomfort from the loss of vision that can be a symptom of other diseases.

The symptoms of astigmatism

With astigmatism at the initial stage of vision is almost not deteriorated people for a long time may not know about existing disease. In severe degree symptoms of astigmatism are more acute blurred vision, eye fatigue, painful and burning sensation, dry eyes. In the initial stages, the disease is almost negligible, so people take him for eye fatigue, because the vision becomes slightly blurred and fuzzy. If astigmatism to run, it can bring unpleasant consequences.

Among other symptoms of astigmatism blurry vision distinguish the contours of objects become blurred, the shape becomes irregular and indistinct. Get real sore and tired eyes, blushing, and felt a burning sensation in the eye, dryness, tearing. When working at the computer or reading a book in a patient with astigmatism can go blind, it becomes difficult to determine the distance to objects. Along with a decrease of vision a person has increased eye fatigue and often headaches.

The child has congenital or acquired astigmatism in both eyes, or one eye may cause blindness due to the fact that the retina of one eye does not participate in the perception of images begins to see only one eye or alternately in both eyes, reduced sharpness and quality of vision. When looking at the objects the child can squint to see things clearly. Indirect symptoms of astigmatism in children can be a problem in the development and achievement irritability, frequent headaches, poor school performance, slow mental and physical development.

Among other symptoms of astigmatism emit light sensitivity. A person can not look at bright light without pain in the eyes, there is pressure on the eyes, discomfort. If a person begins to see the bad in twilight, this may be a sign of astigmatism. The person sees bad in the evening, you feel uncomfortable when driving a car. The eyes constantly strain and start to hurt.

The treatment of astigmatism

If astigmatism start or treated improperly, it can cause sudden vision loss, amblyopia and strabismus. When properly conducted treatment of astigmatism eyesight is fully restored, it becomes clear, the pain symptoms disappear.

In medicine there are 3 main methods of treatment of astigmatism special glasses, contact lenses, surgery. Often patients need to wear glasses with a special astigmatic lenses. Lenses are cylindrical, so they should gradually get used. When wearing such glasses may experience unpleasant symptoms and discomfort can hurt your eyes and dizzy. Eventually they pass.

Astigmatic spectacle lenses are more expensive than a simple lens for the correction of myopia, as in the manufacture take into account the axis of the cylinder for treating the astigmatism. With myopic astigmatism glasses need to consider the diopter of myopia, so vision is not reduced. If the astigmatism occurred, the child’s vision will be corrected only with glasses. In a small age eye surgery is not recommended, as the body does not tolerate it.

How to cure astigmatism using lenses? Modern medicine uses in the treatment of astigmatism contact lenses, which are made in the shape of a torus. These lenses are more convenient and enjoyable than the old hard lenses that were uncomfortable to wear and negatively affect the condition of the cornea of the eye. However, the astigmatism is not treated completely with the help of lens wear, and with the help of special glasses. They can temporarily correct the sight and slow the disease process.

The most effective method of treatment of astigmatism performs surgery. Modern medicine uses the technique of laser correction that is carried out using a special microkeratome device. This type of surgery less dangerous for the patient and is performed using local anesthesia. Using a laser beam to separate the top layer of the cornea, the part of the inner layer is burned, and then the top layer back.

After laser surgery of epithelial tissues regenerate themselves quickly, sutures are not required, and the top layer of the cornea is fused with the help of collagen produced naturally. This method of laser correction (LASIK) is popular among doctors and patients because it requires no lengthy recovery after the surgery and brings rapid positive results. After surgery the patient’s vision is fully adjusted in a few hours.

Prevention of astigmatism

If in the family there were cases of astigmatism, the child is not insured against it. In other cases, it is necessary to observe measures of prevention of astigmatism. They are aimed at removing the strain eye, exercises vision and maintaining eye hygiene

  • It is necessary to observe the correct mode of lighting in the room. Workstation or Desk for study must be properly lit and the light should fall from the left or right side depending on which hand the person writes.
  • Periodically perform exercises to relax the eyes and exercise of vision. Every hour you must take short breaks, look into the distance, doing exercises to relieve tension.
  • Taking vitamins for eyes, maintain the vision, which needs to pick up

    .

  • To respect the visual and physical exertion. Visual work should alternate with action.
  • Foods to eat to enhance eyesight with vitamins a, D (carrots, butter, liver).
  • With the help of massage, colour therapy and other methods can relieve eye strain and to improve the blood supply of the eyeball and its surrounding tissues. The simplest method is the use of the device points Sidorenko, which is used in various diseases of the eye, decreased vision, and at the diagnosis of astigmatism.
  • Correct and timely treatment of eye disease which can lead to the development of astigmatism corneal disease, keratoconus, irregular shape of the lens and others.
  • Carry out regular examinations to prevent disease, especially in patients with astigmatism.
  • To protect eyes from sun, dust and other falling items that can cause injury.

Recommend you read other articles on the topic of Astigmatism


Astigmatism is fairly common eye disease during which disturbed vision (lost focus). Sometimes, both congenital and acquired (due to damage to the right shape eye the cornea or crystalline lens). Due to violations of the angle of refraction of radiation, in a human patient with astigmatism, the observation picture is projected behind the retina or in front of her, that is, the blurred image is given, without sharpening.


Astigmatism is fairly common eye disease during which disturbed vision (lost focus). Sometimes, both congenital and acquired (due to damage to the right shape eye the cornea or crystalline lens). Due to violations of the angle of refraction of radiation, in a human patient with astigmatism, the observation picture is projected behind the retina or in front of her, that is, the blurred image is given, without sharpening.