Can pseudomyopia cause astigmatism?

Written by Li Zhen Dong
Ophthalmology
Updated on September 07, 2024
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Pseudomyopia generally does not involve astigmatism. Pseudomyopia is caused by ciliary muscle spasm, while astigmatism is due to changes in the curvature of the cornea, or changes in the eyeball itself; these two are not the same. Pseudomyopia can be completely cured with proactive treatment, adequate rest, reducing close-up activities, avoiding eye fatigue, and using eye drops that alleviate ciliary muscle paralysis, such as low-concentration atropine eye drops and digoxin eye drops. If not treated actively, prolonged pseudomyopia can turn into true myopia. True myopia involves elongation of the eye axis, leading to blurred distance vision but clear near vision. Therefore, when this occurs, a proper dilated refraction test should be conducted. (Medication should be used under the guidance of a physician.)

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Can playing with a cell phone every day during pregnancy cause astigmatism?

It is not recommended to use cellphones every day during pregnancy. Although using mobile phones does not cause astigmatism, it can still harm the eyes of pregnant women. Astigmatism is caused by congenital changes in the corneal shape and the intrinsic refractive state of the lens. Various acquired factors can also affect the outcome of astigmatism, such as unhealthy visual habits in daily life and changes in refractive status, which can lead to acquired astigmatism. Engaging in prolonged mobile phone use during pregnancy might lead to myopia, but it will not cause astigmatism. Long-term accumulation of myopia can lead to symptoms like dizziness and fatigue.

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Are there any treatments for high myopia and high astigmatism?

High myopia combined with high astigmatism can be treated in the following ways: First, correction by wearing frame glasses is the most widely adopted treatment method currently, which is affordable and safe. Second, using rigid corneal contact lenses for correction, which provide higher image quality than regular frame glasses. Third, correction can be done through laser surgery, such as excimer laser surgery, femtosecond laser surgery, and full femtosecond laser surgery, but it is only suitable for adult patients. Fourth, correction can be accomplished by implanting phakic intraocular lenses in the posterior chamber, generally suitable for patients whose corneal condition does not permit laser surgery, at a higher cost compared to laser surgery.

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Astigmatism in children is caused by what?

The majority of astigmatism in children is caused by congenital factors, that is, genetic factors. If one or both parents of the child have astigmatism, the probability of the child having astigmatism is higher than that of other children. There are also a few cases where a child's astigmatism is caused by acquired factors, such as surgery, trauma, or illness, all of which may cause changes in the curvature of the cornea and lens. Additionally, a lack of outdoor activities and poor eye habits might also promote the development of astigmatism. It is recommended that once a child is diagnosed with astigmatism, they should go to a reputable hospital for examination and then get appropriate treatment to improve the condition, otherwise, it could impact their vision.

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What should I do if I have astigmatism in my eyes?

Astigmatism should be corrected by wearing astigmatic lenses. Astigmatism is a type of refractive error where the refractive power of the eye varies along different axes, resulting in a refractive abnormality. Particularly with high degrees of astigmatism, there may be symptoms such as blurred vision, distorted vision, or even eye fatigue. Therefore, once astigmatism is detected, it is important to visit a hospital for a medical eye examination promptly. It is recommended that astigmatism of 50 to 75 degrees or more should be timely corrected with glasses, otherwise prolonged uncorrected astigmatism can lead to severe eye fatigue. Additionally, if adult patients have other refractive errors such as myopia along with astigmatism, they could also consider undergoing laser surgery for myopia correction.

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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.