Can high myopia with astigmatism be treated with surgery?

Written by Tao Yuan
Ophthalmology
Updated on September 17, 2024
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High myopia combined with astigmatism can also be treated surgically, but it requires the patient to be at least 18 years old, and both the myopia and astigmatism must have been stable for over a year without worsening. Before undergoing surgical treatment, a detailed eye examination is necessary. This includes an optometric examination to accurately measure the degree of myopia and astigmatism, a corneal topography test, and an ophthalmic ultrasound to understand the corneal curvature and thickness. Based on these parameters, a specific surgical plan is designed. If the patient’s corneal condition allows, laser surgery is the preferred method for correction. If the patient’s corneal condition is poor and not suitable for laser surgery, correction and treatment can be achieved through the implantation of a posterior chamber intraocular lens in phakic eyes.

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Written by Wu Ben Rong
Pediatrics
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What will happen if children's astigmatism is not treated?

If children with astigmatism do not receive treatment, the specific consequences will depend on the severity of the astigmatism. If a child has only mild astigmatism and does not exhibit any other clinical symptoms, treatment might not be necessary, and it will not impact the child's vision. However, if the astigmatism is severe, it is necessary to wear corrective lenses for astigmatism; otherwise, it may lead to a decrease in both far and near vision. This is especially true for compound and mixed astigmatism, which can cause a significant decline in a child's vision, and often results in visual fatigue. Children may exhibit symptoms such as eye pain, orbital pain, monocular diplopia, or tearing. Additionally, there may also be occurrences of compensatory head tilting and torticollis.

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Written by Tao Yuan
Ophthalmology
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Can astigmatism be cured by wearing glasses?

Astigmatism cannot be completely cured by wearing glasses. Astigmatism is a common eye disease and a type of refractive error, usually caused by congenital developmental abnormalities. Some patients' astigmatism is related to poor eye habits, such as squinting for long periods, which can lead to astigmatism. The cornea of people with astigmatism has different refractive powers in the vertical and horizontal directions. Therefore, when light passes through the cornea and enters the eyeball, it cannot converge to form a perfect focus, causing the images projected on the retina to become blurry, and the patient will experience a decrease in vision. By conducting an optometric examination, the exact degree of astigmatism and the axis of astigmatism can be determined, and then corrected by wearing glasses. However, the purpose of correction is to improve the patient's vision, and it cannot eliminate the degree of astigmatism.

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Written by Tao Yuan
Ophthalmology
57sec home-news-image

Do you need to wear glasses long-term if you have more than 200 degrees of astigmatism?

Patients with astigmatism of more than 200 degrees generally need to wear glasses long-term. Astigmatism of over 200 degrees is considered moderate and can significantly affect vision. If glasses are not worn to correct this, the patient's unaided vision is usually poor, causing blurriness and inconvenience in work and daily life. Additionally, prolonged unclear vision can easily lead to eye strain, and may even cause symptoms such as eye soreness, dizziness, and headaches. Astigmatism can be diagnosed through an optometric examination, which will determine the specific degree of astigmatism and its axis. Glasses can then be prescribed to correct it. If the patient is an adult who does not wish to wear glasses, laser surgery or the implantation of a posterior chamber intraocular lens can also be considered as treatment options.

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Written by Hu Shu Fang
Ophthalmology
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Astigmatism refers to a type of refractive error in which the eye does not focus light evenly onto the retina, often due to an irregular shape of the cornea or lens.

Astigmatism is a type of refractive error. Because our eyes are not a perfect sphere, they are more like an egg shape, with different meridians having different refractive powers. Thus, after imaging, the axial images may form in front of or behind the retina, rather than forming a focal point on the retina. Normally, astigmatism of some small degrees and with good axial alignment may not significantly affect vision. However, high degrees of astigmatism, especially irregular astigmatism, will definitely impact visual quality and require the prescription of special lenses to correct the astigmatism.

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Written by Wang Hui Zhen
Ophthalmology
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Can astigmatism and strabismus be corrected?

Astigmatism and strabismus can sometimes be corrected, depending on their severity. Astigmatism refers to the condition where parallel light rays entering the eye cannot focus on a single point on the retina after being refracted by the eye's optical system, instead forming two focal lines, ultimately failing to produce a clear image on the retina. Astigmatism can be categorized into regular and irregular types. Regular astigmatism can be corrected with cylindrical lenses in eyeglasses; while irregular astigmatism generally requires correction with contact lenses. Additionally, after reaching 18 years of age, astigmatism can also be corrected through refractive surgery. Generally, mild astigmatism does not impact vision and does not require special treatment; however, moderate to severe astigmatism, if uncorrected, might lead to amblyopia and other vision impairments. Strabismus means that when one eye is focusing, the visual axis of the other eye deviates from being parallel, presenting an abnormal eye position. It is generally recommended to start treatment immediately after diagnosing strabismus. If there is significant refractive error, glasses should be prescribed first. If glasses cannot correct the condition, surgery might be necessary.