Is astigmatism related to genetics, and is astigmatism hereditary?

Astigmatism can be divided into regular astigmatism and irregular astigmatism. There are many causes of astigmatism, including congenital and acquired factors.

Causes of regular astigmatism: Regular astigmatism is mostly caused by congenital anomalies in the cornea, and some patients may also have lens astigmatism. There are also acquired astigmatism, such as long pins and needles or miliary eyelids, and long-term poor eye posture (such as frequent squinting).

Rubbing the eyes, lying down and reading, etc.), so that the eyelids compress the cornea will also change the curvature of the cornea, causing astigmatism and increasing the degree of astigmatism. In addition, certain eye surgeries, such as cataract and corneal surgery, may also alter the degree and axis of astigmatism.

Causes of irregular astigmatism: Irregular astigmatism is mainly caused by uneven refractive surface of the cornea, such as corneal ulcers, scars, keratoconus, pterygium, etc.

Ophthalmologist Shi Yongli Profile: Director of the Department of Ophthalmology, working in a tertiary hospital for more than 10 years, good at cataract, glaucoma, pterygium surgery and various ocular surface diseases, dry eye syndrome, keratitis and pigmentitis, fundus disease, various complex eye diseases, systemic diseases, ocular complications and difficult diseases.

The human eye is not perfect, and if the cornea is curved at one angle and flatter at another, light rays cannot be accurately focused on the retina, a condition known as astigmatism. In addition to the cornea, the different curvatures of the lens are another cause of astigmatism. People with astigmatism have difficulty seeing things in detail.

In general, astigmatism does not occur on its own, and the patient's eyes are usually accompanied by nearsightedness or farsightedness.

Born. However, under normal circumstances, the physiological mechanism can be mediated normally, compensating for the default part, but when the eye is fatigued, the eye's self-regulation ability is reduced, and the astigmatism defect is exposed.

The causes of astigmatism are mainly congenital factors, mostly due to the congenital hypoplasia of intraocular tissues, and the astigmatism degree is large. The general person may have astigmatism below the diopter, which is physiological astigmatism and generally does not need to be corrected.

It is difficult to describe the formation of astigmatism, but most of it is caused by the cornea, and the difference in degrees on the meridians perpendicular to each other is called astigmatism. It's as simple as that, nothing remarkable.

Hello: Yes, the proportion caused by acquired eyes is much higher! They are also highly astigmatism!

Astigmatism is basically innate, and the question is, why is astigmatism innate, but I can see clearly at first but then I can't?

Astigmatism, also known as blurbrow, is a refractive abnormality of the eye that is related to the curvature of the cornea. The human eye is not perfect, and if the cornea is curved at one angle and flatter at another, light rays cannot be accurately focused on the retina, a condition known as astigmatism. People with astigmatism have difficulty seeing things in detail.

As mentioned earlier, the human eye is not perfect.

After birth, there will be a little astigmatism to a greater or lesser extent, but some people are larger and some people are smaller. The human eye does not necessarily grow very regularly during development, and even the pressure of the eyelids can cause some astigmatism.

It doesn't matter if there is a certain degree of astigmatism, the eyes can compensate for it through adjustment, and there is usually no need to wear glasses to correct it. However, long-term severe eye fatigue will cause the eye's ability to adjust to decrease, and it will not be able to compensate for the original astigmatism, so it will manifest itself.

Astigmatism is both innate and acquired.

Some astigmatism is hereditary eye dysplasia, and some astigmatism is caused by acquired trauma, but once the astigmatism affects the vision, you must wear glasses to prevent the astigmatism from deepening.

The key to astigmatism in your family depends on whether your parents have astigmatism and the degree of astigmatism. Generally speaking, both parents have astigmatism, so the child is at least a carrier of astigmatism genes, which will induce astigmatism in the case of eye fatigue or nutritional deficiency. If one of the parents has high astigmatism, whether you overuse your eyes or not, it will cause astigmatism, but it is just a matter of whether the astigmatism occurs sooner or later.

There is no other way to have astigmatism in the hospital than surgery, and for minors, surgery is not allowed. However, correction can be aided by physical training methods. Closing your eyes and turning the inverted "8" figure can effectively take out a part of the astigmatism, of course, you need to persist for a long time.

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Eye astigmatism should still be taken seriously.

Common manifestations of astigmatism in the eyes are:

1. The blurred image on the retina needs to be constantly finely adjusted, and the vision is distorted, so astigmatism, especially for farsighted astigmatism, is prone to visual fatigue. Presents with eye pain, tearing, headache, especially in the forehead, double vision, and short-range work that cannot be sustained.

2. Patients with highly asymmetrical astigmatism in both eyes, in order to see more clearly, often adopt a tilted head position to cause strabismus, which can be recovered after astigmatism correction. Patients sometimes move objects closer to the same place as a nearsighted person in order to obtain a larger image of the retina.

3. People with high astigmatism often squint when looking at distant or near targets, so as to achieve pinholes and fissures to improve their vision. Seeing through pinholes or fissures can reduce the impact of astigmatism on vision.

Astigmatism refers to when the eye is adjusted to rest, after the parallel light rays are refracted by the eye, due to the different refractive power of each meridian of the refractive system, causing different degrees of convergence, so it can not be concentrated on the retina, but at different distances to form two intersecting lines, the distance between the two intersecting lines represents the degree of astigmatism, because the retina is only presented as a hazy ring or a line, so the patient feels blurred regardless of farsightedness and near-sightedness.

Astigmatism**:

1 Mild regular astigmatism does not need to be corrected if there is no eye fatigue or blurred vision, but if there is any discomfort above, it should be corrected even if the prescription is not high.

2 High astigmatism should be corrected with cylindrical scope, if not suitable for all correction, can be given a lower degree, the general common method is to take drugs, usually the doctor recommends taking Leyan vision nutrients, warm water, insist on taking for a period of time, astigmatism can be reduced.

3 Irregular astigmatism cannot be corrected with a cylindrical lens, and contact lenses can be tried.

There are two main causes of astigmatism

One is congenital and is generally related to the surface curvature of the cornea and lens. Almost all people have congenital astigmatism because the surface section of the cornea and lens is more or less astigmatism if it is not perfectly round. It is hereditary, but if it is low-grade astigmatism, it generally has no effect on vision.

The second is acquired, which is generally caused by improper use of eyes, such as lying down and looking at the mobile phone, tilting the head to write and read books, etc., which is not hereditary.

Astigmatism is a condition in which the eye is not well developed and uneven, which may be inherited from congenital conditions or caused by bad eye habits.

The causes of astigmatism are:

1.Curvature varies.

That is, the curvature of the refractive surface of the eye is inconsistent, which usually occurs in the cornea but can also occur in the lens. Mild astigmatism, thought to be physiological, is most commonly caused by a greater vertical curvature of the cornea than the horizontal one, usually about the same. It is caused by frequent compression of the upper and lower eyelids, and this physiological defect tends to grow mildly with age.

Those with a large degree of astigmatism are mostly congenital, and acquired ones are often caused by corneal diseases. For example, keratoconus, degenerative lesions around the cornea or scars left after corneal inflammation often cause irregular astigmatism. In addition, irregular astigmatism can also occur when cataract surgery or eyelid masses compress the eyeball.

2.Optical center deviation.

It is mostly caused by astigmatism caused by subluxation or deviation of the lens caused by disease or trauma.

3.The refractive index varies.

It is caused by differences in the refractive rate in different areas of the lens, such as cataract caused by changes in refractive media, which can lead to various astigmatism, distortion of vision and polyopia.

4. Write and read with your head down; reading a book lying down or lying on your stomach; playing handheld game consoles; looking at the flickering light screen for a long time; will cause astigmatism to occur.

Once astigmatism is formed, there will be visual fatigue, vision loss, compensatory cephalic position and squinting vision, and if not corrected, it will affect a lifetime, so it must be paid attention to.

Commonly used methods to improve astigmatism are:

Children with astigmatism first need to supplement vision nutrients in time, it is recommended to take Lejing vision nutrients, twice a day, one pack each time, take it with warm water, insist on taking it for a period of time, and astigmatism will gradually recover.

The other is to develop good eye habits.

1. Regular eye examination 1 2 times a year. Instruct young children to practice good hygiene and not to contact their eyes with their hands or chemicals. When reading, there should be plenty of light, preferably from the left rear; Correct posture and a distance between 30 cm and 40 cm.

2. When choosing reading materials, the font should be clear and not too small.

3. Watching TV must be 5 7 times the diagonal of the TV picture. Read a book for no more than one hour in a row. If you need glasses, you should be examined by a doctor and then dispensed with glasses.

Both factors are possible!

Ophthalmologist Shi Yongli Profile: Director of the Department of Ophthalmology, working in a tertiary hospital for more than 10 years, good at cataract, glaucoma, pterygium surgery and various ocular surface diseases, dry eye syndrome, keratitis and pigmentitis, fundus disease, various complex eye diseases, systemic diseases, ocular complications and difficult diseases.

Astigmatism is generally not hereditary, because astigmatism is mainly caused by refractive error, which is a disease caused by the child's exposure to bright light after birth, or because the child's usual eye habits are not good. When your child has astigmatism, his or her vision may be blurry and ghosted. If your child has a high degree of medicine, you may need to consider surgery.

Astigmatism is not caused by genetic factors, but is a manifestation of refractive error and is a very common eye disease. Because there are more electronic products now, children often look at mobile phones, TV, and computers, which may affect the child's vision, resulting in astigmatism.

Astigmatism is hereditary. Astigmatism can have congenital astigmatism and acquired astigmatism, and many regular astigmatism is mostly caused by congenital factors, and acquired astigmatism is also seen in eyelids, conjunctiva, and corneal lesions.

Astigmatism is a matter of corneal curvature, and astigmatism can be divided into regular astigmatism and irregular astigmatism. Regular astigmatism-corrected visual acuity can be normal, irregular astigmatism-corrected visual acuity does not improve, and detailed ophthalmologic examinations must be performed, such as corneal topography, corneal endothelial cell count, ocular ultrasound, fundus photography, unaided visual acuity, corrected visual acuity.

The first thing to rule out is keratoconus, which is not easy to diagnose in the early stages, especially in children. If there is astigmatism, it is necessary to actively correct the glasses** or orthokeratology lenses** to avoid the formation of amblyopia and strabismus.

It is common to hear that someone has astigmatism in their eyes. Why is astigmatism occurring? There are many reasons for it, the most important of which is due to changes in the curvature of the cornea of the eye.

The cornea, also known as the black eyeball, is a window in front of the eyeball, which is not only smooth and transparent, but also has a complete hemispherical shape. Its main function is to concentrate the light through light, so that it enters the pupil to reach the retina of the fundus, and then reflects it to the brain, so that people can clearly see the outside world. Therefore, when the curvature of the hemispherical cornea changes, like an uneven lens, the surface is uneven and irregular, and the external light cannot form a focus on the ancestral omentum.

Tian is diffuse in all directions, so that the brain's perception of external objects appears blurred, so that astigmatism is produced. This astigmatism is medically known as irregular astigmatism. Because the curvature of the cornea changes so much, it is difficult to correct with glasses.

There is also a type called regular astigmatism, which is caused by the curvature of the cornea when it is not in a certain direction and its perpendicular direction. There are many types of it, including simple farsighted astigmatism and simple myopic astigmatism; There are repetitive hyperopic astigmatism, recurrent myopic astigmatism and mixed astigmatism, etc., which are mostly caused by the different refractive ability of the cornea, and exist at the same time as myopia or hyperopia, which can be corrected with glasses.

There are two kinds of causes of irregular astigmatism caused by uneven corneal and improper curvature: one is congenital inheritance, and the other is due to acquired corneal disease. As. If the cornea is ulcerated or traumatized, and scarring occurs after healing, the cornea is uneven and the curvature is not correct.

Regular mild astigmatism generally does not affect vision, but there may be uncomfortable phenomena such as eye strain. Many people use their eyes for a long time, which will cause headaches, soreness around the eyes and orbits, and a few people even have symptoms of nausea and vomiting, which have a certain impact on health and work. As for the astigmatism, when the astigmatism is more severe, the object is blurred, which has more impact on the work.