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Astigmatism itself is a special kind of irregular myopia or farsightedness, and astigmatism cannot be equivalent to myopia, and astigmatism is astigmatism. If we have to convert astigmatism to myopia, for myopic astigmatism close to the 0 or 180 axis, we divide by 2, which is 150 degrees of myopic astigmatism, which is converted to 75 degrees of myopia. Astigmatism is common in myopia or farsightedness, astigmatism below 200 degrees is more common, and you are a little too high at 150 degrees.
The axial direction of astigmatism is an important statistic. For myopic astigmatism, an axial approach of 0 or 180 is relatively less impactful, while an axial approach of 90 is the most impactful. Farsightedness and astigmatism are the opposite.
For astigmatism close to 0 or 180 at the time of glasses, it can generally be reduced a little, and the reduced power can be increased by half to myopia. For example, if it is 50 degrees of myopia + 150 degrees of myopia astigmatism, and the axial direction is 180, it can be replaced by 75 degrees of myopia + 100 degrees of astigmatism with an axial direction of 180. Even 100 degrees of myopia + 50 degrees of myopia astigmatism axis 180 instead.
If it is close to the 90 axis, it is generally not lowered. Glasses are not the only prescription. It varies from person to person.
With one eye, there is no ghosting, the red and green optograms are not green and clear, there is no serious discomfort, and the left and right eyes are almost clear.
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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.
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If astigmatism has exceeded 100 degrees, then the degree of astigmatism should be included in the glasses, if it is not equipped with astigmatism, then it may lead to the glasses, and there will be a situation where you can't see clearly after wearing.
However, the current degree is already moderate myopia and moderate astigmatism, so it is necessary to go to the hospital in time for accurate refraction, and then wear appropriate glasses, in addition, you also need 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.
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Advice on eye care for leading glasses: Under normal circumstances, astigmatism can be left without adding without affecting vision, but astigmatism above 50 degrees will affect vision.
And your astigmatism is so large, it will inevitably affect normal vision, which must be added.
Our optometry data is based on the condition of your eyes, specifically detected, and does not transfer with your personal consciousness, so under normal circumstances, the number detected is as much, and personal changes will only be bad for the eyes.
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100 degrees of astigmatism is equivalent to 50 degrees of myopia, and in the case of low astigmatism, the ratio of astigmatism to myopia is about 2:1, that is, 1 degree of astigmatism can be converted into degree myopia.
Astigmatism is a refractive abnormality of the eye that is related to the curvature of the cornea. When parallel light rays enter the eye, they cannot be concentrated at one point (focal point) because the refractive power of the eyeball is unequal on different meridians, and a clear image cannot be formed, which is called astigmatism. Patients with low-grade astigmatism have normal distance and near vision; People with high astigmatism have poor vision both near and far, blurred vision, and visual fatigue.
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Astigmatism and myopia are not easy to compare, they are two different eye problems, just like height and weight, it is not easy to compare, there is no such thing as astigmatism is myopia, generally astigmatism can see the distance.
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100 degrees. Astigmatism and myopia are not the same concept, and the two cannot be compared, but under normal circumstances, astigmatism of 200 degrees is equivalent to 100 degrees of myopia when wearing glasses. Astigmatism and myopia are generally not interchangeable because astigmatism is caused by a change in the radius of curvature of the corneal surface, and myopia is caused by a change in the axis length of the eyeball.
Depending on the form of astigmatism, astigmatism can be divided into regular astigmatism (which can be corrected with lenses) and irregular astigmatism (which cannot be corrected with lenses).
Astigmatism refers to the fact that after parallel light rays enter the eye, the refractive power of the eyeball on different meridians is unequal, and it cannot be concentrated at one point and cannot form a clear image.
Astigmatism can be prevented by practicing good hygiene, not touching eyes with hands or other chemical objects, and reading with sufficient light, correct posture, and clear font.
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Astigmatism is actually a very common phenomenon, it can be said that astigmatism within 100 ° is almost all of us, and this can be used without **.
But if it is a relatively high number of astigmatism, it is recommended that it should be **, because it can cause our eyes to be particularly fatigued, and some people will have a headache after reading a book, why? In fact, it may be the cause of astigmatism.
Astigmatism is not only treatable, but also curable, and there are 3 most common ways:
The first is to wear glasses, which is completely fine for low-degree astigmatism. Then, with more eye exercise, more outdoors, and supplementing the comprehensive nutrition of the eyes with Leyan Vision Nutrients, then it is natural to gradually recover astigmatism!
The second is the excimer laser, which is the kind of laser machine that we often say for laser treatment of myopia, which can also be used for astigmatism.
The third is that some elderly people combine cataract and astigmatism at the same time, and this part of the population can choose a special intraocular lens to correct astigmatism in the process of cataract surgery, and at the same time, the astigmatism can also be cured in the process of curing cataract, killing two birds with one stone.
It is impossible to lower, only to wait until he is old enough to have laser surgery. Students who go to school are wearing deeper and deeper degrees because the task of learning is too heavy. There is no student who is not wearing deeper and deeper, and I have not seen a student who is wearing more and more shallow.
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