Will nearsightedness and astigmatism lead to blindness?

Written by Tao Yuan
Ophthalmology
Updated on September 21, 2024
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Myopia and astigmatism are common eye diseases and belong to two types of refractive errors, which can occur together. Myopia combined with astigmatism can lead to a decrease in vision, but it will not cause blindness. For patients with myopia and astigmatism, there are various methods to correct and treat these conditions, such as wearing frame glasses, rigid corneal contact lenses, undergoing laser surgery, or implanting artificial lenses to restore vision. In daily life, it is also important to develop good eye habits, avoiding using eyes in dim and shaking environments, and reducing the time spent on smartphones, TVs, and computers to prevent and delay the progression of myopia and astigmatism.

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Written by Tao Yuan
Ophthalmology
55sec home-news-image

Can high myopia with astigmatism be treated with surgery?

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 Lian Wen Xi
Pediatrics
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Can 300 degrees of astigmatism in children heal by itself?

Children with 300 degrees of astigmatism will not heal on their own. Astigmatism in children is usually congenital, meaning it is due to genetic factors. There are also a few cases where astigmatism is secondary, caused by poor eye habits or eye injuries, among other reasons. However, regardless of the cause, once astigmatism occurs, there is basically no possibility of it resolving on its own. Astigmatism is a type of refractive error that needs to be corrected by wearing glasses. Moreover, 300 degrees of astigmatism is considered high and can lead to eye fatigue over time. If not corrected, it can also have a serious impact on a child's vision, so parents must pay adequate attention.

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Written by Li Zhen Dong
Ophthalmology
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Can nearsightedness surgery correct astigmatism?

Surgery for nearsightedness can correct astigmatism, and surgeries for nearsightedness can be divided into corneal laser surgery and ICL surgery. Corneal laser surgery can be considered if the astigmatism is less than 400 degrees, while ICL surgery can be considered if the corneal astigmatism is less than 600 degrees. Additionally, astigmatism can be classified as regular and irregular. The treatment is generally more effective for regular astigmatism. If it is irregular astigmatism, further ophthalmologic examination should be conducted to rule out corneal and other ocular conditions.

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Written by Tao Yuan
Ophthalmology
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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 Wang Fang
Ophthalmology
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How to protect eyes with astigmatism

Some patients have congenital astigmatism, while most of the patients have acquired astigmatism. The occurrence of astigmatism is mostly due to improper sitting posture. It is caused by looking at objects from an inclined angle rather than directly from the eyes' proper axis. Especially lying down while reading or using smartphones can easily lead to an increase in astigmatism. If astigmatism is not corrected, it can easily worsen eye fatigue, thereby inducing a further increase in the degree of vision problems. In daily life, it is important to correct poor sitting postures and avoid situations such as lying down while reading or using smartphones. Engage more in outdoor activities, and limit reading sessions to no more than half an hour at a time. Consuming more vitamins A, D, C, E, and lutein in the diet can also help in preventing astigmatism.