How Does Astigmatism See?

How does astigmatism see? How does astigmatism occur? Various questions such as these are among the questions that people with astigmatism frequently ask to specialist ophthalmologists. Astigmatism is one of the eye defects characterized by blurred vision. Like myopia and hyperopia, astigmatism is a type of refractive error in the eye. Astigmatism is caused by an irregularity or curvature in the shape of the cornea or eye lens. Under normal conditions, the cornea layer in the eye is round; However, in some cases, the shape of the cornea may not be perfectly round. In this case, the light is bent and cannot reach the retina correctly. As a result, only part of an object appears clearer, while the part farther from the eye appears blurry.

Astigmatism is one of the common vision defects experienced by many people in Turkey and around the world. Curiosities about the astigmatism problem, which has different types and degrees; “How does one see with astigmatism?”, “What are the types of astigmatism?”, “How is astigmatism diagnosed and treated?” You can read the rest of the article for answers to questions such as and more detailed information about the subject.

How Does Astigmatism Occur?

Astigmatism is generally a congenital eye disorder and may be more common in individuals with a family history of astigmatism. However, it may also occur due to damage to the cornea after eye injury or eye surgery. In addition, keratoconus, a vision problem that manifests itself when the cornea is not strong enough and the eyeball bulges outwards, can also cause astigmatism. So how does astigmatism see? People with astigmatic eye defect may see objects as complex at the point they look at and have difficulty focusing.

How Does Astigmatism See Lights at Night?

People with refractive errors have different vision problems depending on the type of refractive error. Refractive errors are generally examined under 3 headings. One of these is the inability to see distant objects clearly, known as myopia. Another is hyperopia, which is characterized by the inability to see nearby objects clearly. Astigmatism, another eye defect, is a vision defect in which objects appear scattered and blurred. Astigmatism can often be seen together with myopia and/or hyperopia. So how does astigmatism see at night? People with astigmatism cannot perceive night lights correctly. The light coming into the eye is refracted at different angles depending on the irregularity in the corneal layer of the eye. Improper refraction of light causes night lights to appear as lines or stars. People with astigmatism may also see halos or glare around lights at night.

In addition to difficulty seeing objects at night, the symptoms of astigmatism may vary from person to person. So how does astigmatism see? What are the symptoms? Common symptoms of astigmatism can be listed as follows:

• Headache,
• Eye fatigue,
• The need to squint to see objects,
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• Difficulty looking at the light,
• Seeing rings around the lights

In addition to the above mentioned, problems with seeing distant or near objects with blurred vision in cases where astigmatism is seen together with myopia and hyperopia It also accompanies. So how does myopic astigmatism see? How does hyperopic astigmatism see? While people with myopia-astigmatism vision defect cannot see distant objects clearly in addition to blurred vision, those with hyperopia-astigmatism have difficulty in selecting nearby objects. Accordingly, the answer to the question of how one sees with astigmatism may vary depending on whether there is another accompanying refractive error.

What are the Types of Astigmatism?

There are different types of astigmatism. The most common types of astigmatism can be listed as follows:

• Corneal astigmatism: Corneal astigmatism is the most common type and occurs due to abnormal corneal curvature. Curvature may occur on the front or back surface of the cornea.
• Lenticular astigmatism: Lenticular astigmatism is a type of astigmatism caused by the abnormal curvature of the eye lens. Under normal conditions, the eye lens is located behind the pupil and ensures that the image is formed on the retina. However, when the lens has an abnormal curvature, the image is not focused correctly on the retina. As a result, the image becomes blurred.
• Regular astigmatism:It is one of the most common types of astigmatism. In regular astigmatism, the image is formed as two lines perpendicular to each other.
• Irregular astigmatism: In case of irregular astigmatism, there are many lines instead of two lines perpendicular to each other. For this reason, visual impairment may be at a more advanced stage in people with irregular astigmatism.

In addition to those listed above, there are different subtypes of astigmatism, such as myopic astigmatism and hyperopic astigmatism, depending on the refractive errors that accompany astigmatism.< /p>

What are the Degrees of Astigmatism?

How is Astigmatism Diagnosed?

Astigmatism can be easily diagnosed after a detailed examination by a specialist ophthalmologist. Various tests and imaging techniques are used to determine whether a patient who consults an ophthalmologist with vision problems has a refractive error in their eyes. The astigmatism test performed to determine the degree and characteristics of the refractive error plays an important role in the diagnosis of astigmatism. The main techniques used in the diagnosis of astigmatism and other refractive errors are as follows:

• Visual acuity test:This test is performed to understand the acuity of the patient's vision. During the test, the patient is seated in a chair and asked to read letters and symbols on a table on the wall from a certain distance. The letters and symbols in the table gradually become smaller. The test ends when the patient begins to have difficulty reading symbols or letters.
• Poropter:This test is performed to measure the ability of the patient's eyes to focus on light. During the test, a lens is placed in front of the patient's eyes and how the patient's eyes focus on light is measured with an instrument called a retinoscope.

Astigmatism Treatment

Although astigmatism is generally a congenital vision defect, most people may face refractive errors at some point in their lives due to various reasons. Astigmatism, one of the refractive errors, can appear at a very early age or at later ages. There are various treatment options used depending on the degree of visual impairment. The expert ophthalmologist decides which of these treatment methods will be used by looking at the patient's age, general health condition, and whether he or she is suitable for surgery.

Today, astigmatism treatment can be performed by different methods. Depending on the degree of refractive error, astigmatism can be treated with the use of glasses or contact lenses. In addition to glasses and contact lenses, another treatment option is laser surgery. In this method, laser is used to smooth the surface of the cornea. However, laser treatment is not suitable for every refractive error. At this point, the expert ophthalmologist decides whether the patient is suitable for surgery after the checks.

If you are experiencing vision problems such as blurred vision, difficulty looking at light, you can make an appointment with an ophthalmologist who is an expert in the field, and after the necessary checks, you can choose the most suitable treatment method for you. You can get information about.