Can computers cause astigmatism in the eyes? As the title suggests, thank you

1 All of them can only be said to be possible, so astigmatism must be paid attention to.

Studies have shown that the most common manifestations of astigmatism in the eye 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.

Light leakage is that the screen liquid crystal and the frame do not fit tightly, resulting in direct transmission of lamp light, LCD light leakage is a common problem, in a sense, LCD basically can not avoid the occurrence of light leakage, but the degree of problem. Low-end displays may be more noticeable, while high-end displays rarely have noticeable light leakage.

Resolution. Since the light leakage caused by the bezel will basically not affect the normal use, no manufacturer will replace it. General LCD displays will have slight light leakage during the assembly process, so you don't need to pay too much attention to it. The main reason is that the best quality panels are used in panel procurement, and the display is well designed with care during the assembly process.

As a result, high-end displays rarely exhibit significant light leakage.

If you buy a low-end monitor, there is no need to inquire about the problem of light leakage, because even if you have it, no one will return it, unless the problem is serious. But if you buy a more high-end display, you must ask the problem of light leakage, after all, it costs a lot of money, and getting excellent service is also what you should get by spending more money. If the light leakage is too obvious, you can use black adhesive tape to stick it along the edge of the light leakage.

Astigmatism is a very common refractive error, and the degree of astigmatism is relatively stable, that is, astigmatism does not increase or decrease significantly with age.

The common causes of astigmatism are:

1.heredity (astigmatism greater than 200 degrees will be inherited);

2.Frequent squinting can lead to astigmatism;

3.High intraocular pressure due to excessive eye use can also lead to astigmatism;

4.Astigmatism caused by eye diseases (keratitis, stye, etc.) is caused by irregular corneal morphology, which can be corrected by refractive surgery.

Regardless of whether it is astigmatism or myopia, you can't look at the computer for a long time, one is easy to cause eye fatigue, and the other is easy to radiate the body, so try to minimize the time spent looking at electronic products.

If the astigmatism is not corrected, you will have a headache when you look at the computer for a long time.

Generally speaking, astigmatism within 50 degrees can be regarded as physiological astigmatism, which is formed by the non-spherical physiological structure of our eyeball, and is negligible because it will not affect vision; And once the diopter is stable in adults, astigmatism generally does not increase.

But there are many factors that can cause refractive changes, such as fluctuations in blood pressure or blood sugar; The cornea is compressed or stretched out by external forces (such as corneal damage caused by trauma or pterygium formation).

The typical symptom of astigmatism is to see an object in a certain direction with obvious ghosting, and the higher the astigmatism, the more obvious the ghosting. If you are not developing myopia, but you feel that your vision has decreased significantly recently, it is recommended that you immediately go to the hospital for ophthalmology examination.

Nowadays, there are glasses that specialize in the prevention of astigmatism, and you can wear them when you are using your computer.

The best way to prevent astigmatism is not to read shakingly, and not to read while lying down, and then pay attention to eye problems, and if there is a problem, go to the eye hospital immediately for examination.

Insist on exercising outdoors every day, eat more foods containing carotene and zinc, and take a break every 20 minutes when watching the computer.

Preventive tips, reduce the time spent staring at the computer, arrange the working time in front of the computer reasonably, and avoid using your eyes for a long time.

Personally, I think that if it is easier to astigmatism on the computer, then we can go to the optical store to get a pair of glasses to prevent astigmatism, and then put a blue light film on the computer screen.

1Why do all have astigmatism? 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 called 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 retina, but disperses in all directions, making the brain's perception of external objects 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 when the curvature of the cornea does not coincide with its perpendicular direction in one direction. There are many types of it, including simple farsighted astigmatism and simple myopic astigmatism; There are schematic diagrams of recurrent hyperopic astigmatism, recurrent myopic astigmatism and mixed scattered simple myopic astigmatism.

Light, etc., which is mostly caused by the different refractive ability of the cornea, and coexists with myopia or farsightedness, and 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.

If the cornea is ulcerated or traumatized, and scarring occurs after healing, it will cause the cornea to be uneven and crooked. 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.

There are many causes of astigmatism, the most common ones are:

1) Curvature astigmatism: caused by abnormal changes in corneal curvature. If the meridian with the largest refractive power and the meridian with the smallest refractive power are perpendicular to each other, it will cause regular astigmatism, which is mostly congenital, and the astigmatism degree is large.

If the surface of the cornea is irregularly deformed, bent and uneven, and cannot form a focus on the retina, it is called irregular astigmatism, such as corneal traumatic scarring, keratoconus, corneal degeneration, etc.

2) Eccentric astigmatism: in the past, it was mostly seen in crystal shifting, such as congenital deviation, crystal subluxation, etc.; In recent years, due to the increase in refractive corneal surgery, astigmatism caused by the deviation of the optical center of the RRK and LASIK surgical spots can also be seen in clinical practice.

3) Refractive astigmatism: It is caused by the change of the refractive index of each part of the lens. The astigmatism is generally small, such as senile cataract, the lens cortex has water gaps, feather-like opacity, resulting in changes in the refractive index of the lens, and astigmatism can be formed.

Astigmatism can be divided into irregular astigmatism and regular astigmatism depending on the refractive condition. Irregular astigmatism refers to the inconsistency of the curvature of each meridian, which cannot be corrected with a general cylindrical lens; Regular astigmatism means that the meridian with the greatest curvature is exactly perpendicular to the meridian with the least curvature, and can be corrected with a cylindrical lens to obtain better vision.