Treatment - Astigmatism (Astigmatism)
}November 10, 2021
jDr.. Muhannad Al-Khatib

Astigmatism Treatment

}November 10, 2021
jDr.. Muhannad Al-Khatib

Astigmatism Treatment

Table of Contents

    Astigmatism is a vision disorder that is widespread in the world, and the diagnosis and treatment of this disorder has greatly accelerated in Turkey.

    A glimpse of the eye and refractory circles

     To understand more about astigmatism, we must understand the refractive system more.
    Vision occurs when light enters the eye through the pupil. With the help of other important structures in the eye, such as the iris and cornea, the right amount of light is directed towards the lens which directs the light onto the retina.
    The iris controls the amount of light entering the eye by narrowing or dilating the pupil.
    The light-refracting structures in the eye are: the cornea and the lens, each of which has an anterior and posterior surfaces. The cornea is the outer, circular transparent part of the front of the eyeball. It is devoid of vessels with severe coccygeal vascularization and is highly sensitive to pain. The lens is a transparent structure located behind the pupil within a thin transparent capsule,
    Just like the lens in a camera, the lens in the eye "refracts" (bends) the light incoming on it to optimally fall on the retina.
     The retina is made up of millions of specialized visual cells known as rods and cones, which work together to convert an image or light falling on the retina into electrical energy, which is sent to the optic disc and then transmitted via electrical impulses along the optic nerve to be processed by the brain and we get Picture the body in its correct position and size.

    What is astigmatism?

    Astigmatism is a common eye disorder or error in the curvature of any of the eye's refractive surfaces that results in blurry, blurry, or unguided vision. In astigmatism, the cornea is not round, meaning that its surface is not spherical. Most people have a certain degree of astigmatism, even if they do not feel a defect in their vision.
    There are several ways to classify astigmatism based on several factors:

    According to the structure responsible for the defect

    Astigmatism treatment

    The difference between the eye's normal cornea and the cornea in astigmatism

    • Corneal astigmatism: The defect is on one of the surfaces of the cornea.
    • Lenticular Astigmatism: The defect is on one of the surfaces of the lens.
    The defect can also be in both structures and in their anterior or posterior surfaces.

    Based on longitude or eye axes

    The eye consists of several meridians. To explain more, we suppose that the front of the eye is a clock face or a circle whose center is the middle of the pupil, and each meridian connects between two different numbers (such as the diameters in a circle), and the main meridians are two lines: one of them reaches between the third and the ninth hour The other arrives at 6:00 and 12:00.
    In astigmatism, the flattest and most convex (sharp) meridians are the two principal meridians.
     Understanding meridians is essential when talking about the different types of astigmatism.
    According to these lines, astigmatism is divided into:

    regular astigmatism

    In this case, the principal meridians are orthogonal and the refractive force of the cornea is constant in each of the orthogonal axes. This is the most common type of astigmatism.
    Astigmatism can be broadly divided into:
    Astigmatism according to the rule with-the-rule astigmatism
    Common in children where the refractive force of the vertical meridian is greatest and most convex (severe) and remains close to 90°.
    Astigmatism against-the-rule astigmatism
    The horizontal meridian remains close to 180° and the refractive force is greater than the vertical axis. Astigmatism against the norm is common in the elderly.
    oblique astigmatism
    Oblique astigmatism is diagnosed if the principal meridians are not at 90° or 180°. Here, the shape of the eyeball resembles a tilted American football, with the prime meridians located between 30° and 60° and 120° and 150°.
    Regular astigmatism can also be divided based on the defect in vision that occurs (which is caused by the difference in refractive force in the perpendicular axes and not in the same axis):
    simple regular astigmatism
    It means that one of the two axis of the cornea brings the focus of the image on the retina, while the other axis brings it in front or behind the retina, meaning that this type of astigmatism is not accompanied by myopia or long-sightedness.
    compound regular astigmatism
    In this type the patient suffers from farsightedness or myopia. Where both longitudes focus the focus of the image in front (myopia) or behind (farsightedness) the retina.
    mixed regular astigmatism
    In this case, one of the two axes focuses the image in front of the retina and the other behind the retina.


    Irregular astigmatism

    The principal meridians are not orthogonal and the refractive force of the cornea is different along the same axis.
    It is uncommon compared to the regular type and is often seen in external eye injuries as a result of trauma or surgery.
    We note that the classification of astigmatism is complex, and it can be said that each patient has his own classification, but these classifications were developed to facilitate matters and lay the groundwork for the treatment plan and then modify it.

    Astigmatism causes

    Until now, doctors do not know the reason for the different shape of the cornea or lens and its curvature in people in the normal state.
    As well as in the case of astigmatism, the cause is not clearly known.
    The condition may be present at birth, which indicates the significant role of genetics in this disorder.
    Astigmatism may also result from an eye injury, eye surgery (such as surgery to implant an artificial lens).
     or about a condition known asKeratoconusWhich leads not only to the thinning of the cornea, but also to its conical shape and lead to a refractive defect.
    This condition leads to a severe degree of astigmatism, which causes poor vision in the patient, and this weakness cannot be completely corrected using glasses, and in many cases, a corneal transplant is required.
    Astigmatism can also occur due to the pressure of the eyelids on the cornea or the constant rubbing of the eyes (prefer not to do this) and does not result as many think from bringing the book close to the eyes while reading or from reading in dim light.
    Astigmatism is usually associated with nearsightedness or farsightedness, and together they are called refractive disorders.

    Astigmatism symptoms

    Astigmatism symptoms vary and vary according to the severity and types of astigmatism. Symptoms often include:
    • Blurred vision or distorted vision at all distances.
      Astigmatism Treatment

      Vision with or without astigmatism (astigmatism)

    • headache;
    • Difficulty seeing at night (difficulty driving at night).
    • Irritation and eye strain eyestrain.
    • Long stare until vision becomes clear.
    • Astigmatism affects the depth of vision, determining the distance, and clarity of the true shape of objects, and the patient can feel out of balance.
    What can cause astigmatism in children? with a lazy eye.

    Methods of diagnosing astigmatism in Turkey

    Methods for diagnosing astigmatism in Turkey have developed greatly, and the periodic examinations that are conducted have helped many people to solve a problem that many overlooked.
    This is especially important for children, where they do not complain of a defect in their vision, either because they cannot or because they think that it is the normal state. It is necessary and even inevitable that periodic examinations be made for them because astigmatism affects the degree of their production, participation and interaction in school and at home, and their educational achievement.
    Adolescents should also be investigated for the presence of a disease (keratoconus).
    get up Various tests Determine the degree of astigmatism and what is the best method of treatment or lenses that should be used.
    At first, the doctor performs a routine eye examination, and in the event of an abnormality, more accurate diagnostic methods can be used.
    Of the tests or devices used:

    visual acuity test

    In this test, your doctor will ask you to read the letters or point them to a chart at a specific distance to determine how well you can see the letters.

    The phoropter device

    refraction test (how the eye refracts light)

    An optical test that uses a machine called a phoropter. The device has multiple corrective glass lenses with different strengths. Your doctor will ask you to read a chart while looking at the lenses that the doctor changes to fit your vision.
     In the end, it will be determined which lens best corrects your vision and astigmatism.


    It measures the degree of curvature of the cornea, in which light is focused on the cornea, and it measures the reflected light and how it is reflected to determine the curvature of the cornea. This test is important for obtaining the right lenses and differentiating between normal astigmatism and disease-induced astigmatism.

    corneal topography

    It helps to obtain more information about the topography, curvature and shape of the cornea to understand the astigmatism of the eye in more detail and to choose the appropriate treatment for the astigmatism.

    Astigmatism treatment in Turkey

    Recently, methods of treating astigmatism have developed in Turkey, and the devices and methods used have varied, to suit the different types of visual defects, the different degrees of astigmatism, the severity of the disorder and the symptoms of those affected.
    The condition can be mild and asymptomatic and does not require any treatment.
    The symptoms can also be annoying to the patient and affect his daily life and production, and then the doctor must be reviewed to determine whether the patient has astigmatism or not and the method of treatment.
    The main treatment for astigmatism is the correcting lenses, whether as eyeglasses or as contact lenses, these lenses correct the majority of cases of astigmatism.
    The contact lenses used to treat astigmatism were once thought rigid contacts, but now another type of lens has been developed called toric contacts, which are small soft lenses. Regular lenses only have one power, but toric lenses have two: one for distance vision and one for astigmatism.
    Rigid contact lenses remain the best option in severe astigmatism conditions.
    In contact lenses, the field of vision is wider compared to glasses, and they are more suitable in practical life, but they have several disadvantages, such as infections due to neglect of hygiene and health rules, and they may not be suitable for all patients.
    Other treatment methods include:


    It is called an “ortho-k” acronym, and the doctor prescribes a hard contact lens that a person with astigmatism wears when sleeping, and these lenses straighten the shape of the cornea. This operation is not intended to cure astigmatism, but rather a temporary treatment, and the problem can return if these lenses are discontinued.


    There are several surgical methods to treat astigmatism, most of them using lasers, and they are often definitive curative treatments, but they may contain some problems and complications, including:


    Astigmatism treatment

    LASIK operation

    laser in situ keratomileusis A small flap is created in the cornea using small, fast laser pulses. The flap is folded back and a directed laser is used to reshape the cornea. The flap is put back into place, where it adheres normally. has evolved Laser treatment of eye disorders significantly in Turkey and achieved high rates of recovery and success.

    PRK . corrective corneal epithelium grafting

    Photorefractive keratectomy In it, the superficial epithelial layer of the cornea in the patient's eye is removed by a brush or a specific medical instrument, and then the laser is directed to reshape the cornea. After the operation is completed, the doctor places a contact lens over the cornea until its epithelium grows again.

    Corneal finishing RK

    This process was dispensed with in the previous ones due to its many complications and inaccurate results.
    We may need a new corneal transplant if it is badly damaged, which was exaggerated in Corneal transplantation in Turkey.
    These operations can be performed on patients who are in good health and who are qualified for surgery.
    Everyone should have regular checkups to ensure the health of their most important sensory organ and to correct any malfunctions in it.
    Bimaristan Medical Center It is your first choice for treatment in Turkey. We guide you to the best expert specialists in all departments. We facilitate the language of communication between you and everyone through specialized Arab doctors who will help you communicate with your doctor. We help you secure the right treatment and high-end service in the most modern hospitals and medical centers in Turkey. We provide our services extensively and precisely. We accompany you step by step towards recovery. Free consultations around the clock. do not hesitate contact us, Bimaristan Family Center in Turkey.

    common questions

    How does an astigmatism patient see?
    Astigmatism treatment

    We note the clear difference in vision, and vision varies with the severity of astigmatism.

    Does LASIK treat astigmatism?
    Yes, and it is a curative treatment in most cases, and a slight degree of astigmatism may remain after treatment. But it is feared that the patient will need another treatment session.
    Turkey has developed in the field of laser treatment and the complications have decreased significantly.
    Is astigmatism dangerous?
    In severe cases of astigmatism, the vision is blurry or blurry, especially at night. It may lead to traffic accidents in case of neglect and may lead to a low level of educational attainment in children, but in general, the treatment is easy and does not pose any danger.
    Does glasses treat astigmatism?
    Yes, but it is not a curative treatment, as in most cases the patient remains wearing glasses for life.

    Table of Contents

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