What does myopia plus astigmatism mean?

It is the condition that there is myopia and astigmatism in the eye, that is, there is a problem with vision. If this power has affected daily vision, then it is necessary to wear appropriate glasses to correct it, and it is also necessary to pay attention to:

1. The time of close eye use should not be too long, every 40-50 minutes, you should take a little rest for 3-5 minutes, and look into the distance to relieve visual fatigue.

2. Read and write, play with the computer, maintain a correct posture, the height of the table and chair should be appropriate, and the distance between the eyes and the reading materials should be about 33 cm.

3. Mix whole grains, meat and vegetables, eat more vegetables and fruits, and don't eat partially. Lack of vitamins in food is prone to night blindness and dry eye disease, and lack of trace elements chromium and calcium in food makes it easy to suffer from myopia. In addition, it is also necessary to pay attention to regular supplementation of eye vision nutrients, not from the nutrients required by the eyes, enhance the anti-fatigue ability of the eyes, and better protect the eyesight.

Fourth, when reading and writing, the light should be moderate, not too strong or too dark, and the light should come from the left front, so as not to obstruct the vision of the hand shadow. The light should be soft, if it is incandescent, it should be between 25 and 40W, and it is not recommended to read in the sun. Because the intensity of light has a direct impact on pupil dilation, too strong light will increase the intensity of eye accommodation, aggravate the intensity of eye labor, and it is easy to cause myopia after a long time.

Generally, desktop lamps should be less than 40 watts.

5. Avoid reading while walking or reading in a walking car. Because the carriage is shaking, the body is shaking, and the distance between the eyes and the book cannot be fixed, the burden on the glasses will increase. Often, this is likely to lead to myopia.

6. Actively participate in physical exercise to enhance physical fitness. As the eyeball follows the target, the ciliary muscles continue to relax and contract, and the synergistic effect of the extraocular muscles can increase the blood perfusion of the eye, promote the metabolism of the eye, and thus reduce eye fatigue. Moreover, the quality of physical fitness is also closely related to the occurrence of myopia in children.

Malnourished and weak children are prone to myopia.

7. Insist on doing proper eye exercises. By massaging the acupuncture points around the eyes to enhance the blood circulation of the eye socket, improve neuronutrition, eliminate the excessive congestion in the eye, and achieve the purpose of relieving eye fatigue, it is conducive to the prevention and treatment of pseudomyopia in adolescents, and is a good way for adolescents to self-care their eyes.

8. Eat less candy and high-sugar foods. Too much sugar will produce a large amount of acidic substances in the blood, and the acid will combine with the salt in the body, especially calcium, resulting in a decrease in blood calcium, which will affect the toughness of the eye wall, make the eye axis easy to elongate, and promote the occurrence and development of myopia.

To put it simply, myopia is blurry in the distance, astigmatism is to see double vision in the distance, you are myopic astigmatism, and you see blurred and double vision in the distance. Myopia lenses are corrected with concave lenses, astigmatism is corrected with cylindrical lenses, and myopia astigmatism is the function of both lenses on the lens.

Astigmatism is a refractive abnormality of the eye that is related to the curvature of the cornea.

Some people have a curved cornea in one angle and flatter in others. The cause of astigmatism is that the refraction rate of each meridian of the cornea is inconsistent due to the uneven thickness of the cornea or the uneven curvature of the cornea, so that the light rays passing through these meridians cannot be concentrated at the same focal point, and the light rays cannot be accurately focused on the retina to form a clear image, which is called astigmatism.

Common clinical manifestations of astigmatism are:

1. Blur. Blurred vision is closely related to the degree and pattern of astigmatism. People with mild astigmatism usually have normal vision, but when looking at objects at a distance, they may experience symptoms such as headaches, eye strain, and blurred vision.

People with severe astigmatism have blurred and distorted vision. It is not very clear to see from a distance or up close. If you work a little longer at close range, you may have eye swelling, headaches, reading movements, or double shadows.

2. Eye fatigue.

Blurry images on the retina require constant fine-tuning, coupled with distortion of vision, so astigmatism, especially farsightedness, is prone to visual fatigue. Repetitive hyperopic astigmatism in young people can often be compensated for by adjustment, and according to the degree of adjustment, pseudosimple hyperopic astigmatism, pseudosimple myopic astigmatism or false repetitive myopic astigmatism can be formed.

3. Normal head and eye position.

People with high asymmetrical astigmatism in both eyes often use a tilted head position to cause strabismus in order to see more clearly, which can be recovered after astigmatism correction. People with high astigmatism often squint at distant targets to reach pinholes and cracks to improve vision. Seeing through pinholes or gaps can reduce the impact of astigmatism on vision.

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.

Myopia is an overall change in the refractive system, such as a football that is scaled up and down. The shape remains the same.

Astigmatism is a local change in the refractive system, such as a soccer ball slowly turning into a rugby ball. The local position varies relatively greatly.

Myopia: A symptom of blurred vision, where you can see clearly at near and not at a distance.

Astigmatism: Seeing things blurrily and having obvious double vision symptoms, that is, seeing one point as many points.

Myopia is when the image falls in front of the retina, so the vision is not clear, while astigmatism is the refraction of light rays entering the eye through the refractive system, which can not form a focal point on the retina, but forms an intersectional line, which will lead to double vision and aggravated visual fatigue.

Myopia is when the eyes see near and see clearly, and the vision far is blurry! Astigmatism is not clear when you see close, but you can see clearly when you see far away!

Astigmatism and myopia are two different concepts, astigmatism is a type of refractive error of the eye, which is related to the curvature of the cornea. The human eye is not perfect, and some people have eyes with a more curved cornea in one angular area and flatter in others. The cause of astigmatism is that the refractive rate of each meridian of the cornea is inconsistent due to the uneven thickness of the cornea or the uneven curvature of the cornea, so that the light passing through these meridians cannot be concentrated in the same focus.

As a result, light rays cannot be accurately focused on the retina to create a clear image. Astigmatism will also cause a lot of inconvenience to life, easy to cause visual fatigue, weakness and strabismus, mild astigmatism can not be corrected, but if astigmatism is severe, it is recommended to wear corrective glasses, and regularly go to the hospital or use a home refractor to check whether the vision is reversed.

Myopia? Astigmatism? What does it look like? Do you want glasses?

Medically speaking, myopia and astigmatism are both manifestations of refractive errors. In fact, it is very simple to distinguish myopia and astigmatism, myopia is more clear when looking closely, and it is not clear when looking at a distance, but astigmatism is to see that the edge of the object is blurred, and severe astigmatism will even appear ghosting, no matter how far or near it is difficult to see clearly.

Astigmatism itself can develop into myopia, and the astigmatism combined in myopia can promote the occurrence and development of myopia.

Myopic astigmatism is a more complex type of refractive error of the eye, called mixed astigmatism, spherical lens is farsighted, cylindrical lens is myopic state The symptom is that the eye is more prone to visual fatigue.

Commonly used methods of improvement are:

First, we should pay attention to balanced nutrition and reasonable diet. In addition to protein and vitamins, calcium, chromium and other elements have been confirmed to be essential substances for eye development, milk, soy products, animal liver, beef, etc. are also essential foods;

The second is to limit sugar. Sugar is an acidic food that can deplete calcium in the body and induce myopia.

the third is to get enough sleep to maintain the functional balance of sympathetic and parasympathetic nerves;

Fourth, exercise more, such as kite flying, shuttlecock kicking, table tennis and other sports activities to promote the blood and metabolism of eye tissue.

Fifth, pay attention to correct eye hygiene. Do not read or write in an environment where the light is too strong or too weak, and do not read or write for more than half an hour at a time; Cultivate a good and correct posture of reading, writing and drawing, and keep the distance between the eyes and the book at an angle of 30 to 40 degrees; When watching TV, the distance should be greater than the diagonal of the TV screen 5-7 times, and the continuous TV viewing time should not exceed half an hour.

Sixth, it is necessary to supplement vision nutrients in a timely manner, especially for children under the age of 18, who are still in the stage of vision development, and the adjustment of the eyes is strong, which can be well controlled and reduced. It is generally recommended to take two packs of Leyan Vision Nutrients every day, and insist on taking it for a period of time, the refractive error will gradually be corrected, and the vision will gradually improve.

The statement that astigmatism is myopic is inaccurate; It should be said that it is myopic astigmatism, which can be understood as myopia plus astigmatism; Or there is no myopia (myopia is spherical lenses, astigmatism is cylindrical lenses) and only astigmatism (only cylindrical lenses).

The difference between astigmatism and myopia is as follows:

1. From the perspective of imaging principle:

1) Myopia: Under the premise of refractive rest, the focus formed by people looking at distant objects is in front of the retina, so they cannot see distant objects clearly.

Myopia is divided into simple myopia, simple myopic astigmatism, and reversive myopic astigmatism.

In the myopic eye, when the eye is at rest, parallel rays of light are refracted and focused in front of the retina. In simple myopic astigmatism, when the adjustment is stationary, the parallel rays are refracted through the eye, and due to the different refractive power of each meridian, one focal line is on the retina and the other is in front of the retina. In recurrent myopic astigmatism, both focal lines fall in front of the retina, one after the other.

Myopia: In the state of adjusting relaxation, parallel light rays enter the eye through the refractive system of the eye and focus in front of the retina, and cannot form a clear image on the retina, which is called myopia. In the modern era, it is divided into simple myopia, single near scattered, and complex near scattered.

Astigmatism: Myopia: In a state of accommodative relaxation, parallel rays of light enter the eye through the eye's refractive system, and do not form a single focal point on the retina, but form two or more focal lines.

Astigmatism is divided into regular astigmatism and irregular astigmatism. Regular astigmatism: single dispersion, refolding dispersion, single dispersion, refolding dispersion, and mixed astigmatism.