What are the dangers of refractive error and what is it?

The most common refractive errors are mainly divided into three types, farsightedness, myopia, and presbyopia. The main causes of this disease are heavy learning tasks, the increase in the use of near eyes due to the spread of television and computers, and the decrease in outdoor activities. If there is no long-term, large amount of near eye use, it can also cause refractive error.

So what? Children with alternating strabismus may have normal vision in both eyes, but they can only fix with one eye, in addition to not seeing as wide as normal people, more importantly, they do not have the ability to fuse images and stereoscopic vision, and cannot accurately distinguish the distance between the front and back of objects. Strabismus patients cannot perform tasks that require stereoscopic vision, such as driving, mapping, etc.

There are also some patients with paralytic strabismus, due to ophthalmoplegia, vision in pairs, in order to overcome diplopia, the use of hewphalic, side face, chin lift and other special head position to compensate, medically called "compensatory head position". For children, this not only affects aesthetics, but also leads to deformities in skeletal development throughout the body. It can be seen that the harm of strabismus not only affects beauty, in order to reduce and avoid the above-mentioned serious complications, it must be taken seriously and as soon as possible.

Prevention and prevention must be done in daily life, especially for children. So how to prevent strabismus in children? When reading and printing, the handwriting should be clear, be careful not to lie down and read, and do not watch TV or play game consoles and computers for a long time, and it is best not to look at three-dimensional drawings.

Refractive error refers to the image of the eye in front of or behind the retina after the refractive action of parallel rays through the refractive action of the eye without the use of accommodation. It includes farsightedness, myopia, and astigmatism

1. Myopia. Mild or moderate myopia, with no symptoms other than blurred vision, does not require adjustment or minimal adjustment when working at close range.

It is convenient to see small targets clearly, but in highly myopic eyes, the target is very close to each other when working, and the two eyes are too inwardly gathered, which will cause excessive use of the medial rectus muscle and cause symptoms of visual fatigue.

2. Farsightedness. The visual acuity of the farsighted eye is determined by the level of its farsighted refraction and the strength of the accommodative power, mild hyperopia can be overcome with a small amount of accommodative force, and the distance and near vision can be normal, and there are generally no symptoms, so hyperopia is called recessive hyperopia.

Slightly heavier hyperopia or slightly insufficient accommodative power, so far and near vision are not good, these can not be completely compensated by the adjustment of the remaining part is called overt hyperopia, implicit hyperopia and vision together is called comprehensive hyperopia, hyperopia due to long-term adjustment tension, it is easy to occur vision fatigue symptoms.

3. Astigmatism. Patients with low refractive power may be asymptomatic, and slightly higher astigmatism may have vision loss, and it is not clear whether to see far or near, and there seems to be double vision, and there are often symptoms of visual fatigue.

It is recommended to go to the hospital for accurate refraction to determine the type of refractive error in the eye.

Also note:

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.

My son is three years old and three months old, and the test result is refractive error amblyopia strabismus: Wu Jian's amblyopia is mainly before the age of 12, and the most extreme is before the age of 7. In addition to the doctor's examination and guidance, the cooperation of children and parents is also needed, otherwise it will not only get half the result, but also may give up halfway.

Amblyopia's wearing glasses, covering, fine operation training and amblyopia are all indispensable. It can only be cured with the cooperation of doctors, children, teachers, and parents.

5-year-old children with refractive error: Wu Jian refractive error, ophthalmic disease refractive error is not very familiar to the general public, but people are not unfamiliar with myopia, farsightedness and astigmatism. Refractive error refers to abnormal refractive states such as myopia, farsightedness, astigmatism, and anisometropia.

Refractive error can generally be corrected with glasses, the appearance of the glasses people wear are similar, but myopia, farsightedness, astigmatism wear glasses are not the same, they need to be: myopia with a concave lens correction, hyperopia eyes need to wear a convex lens, astigmatism needs to be corrected by a cylindrical lens

Amblyopia refractive error: Xuan Cunwang amblyopia is a clinical manifestation of refractive abnormality, before the age of seven is the best time, if you miss this time is difficult to completely, so there is no good clinical method for amblyopia in adults. It is recommended that you wear glasses during the medical check-up.

People with refractive error in both eyes: Wu Jian refractive error, ophthalmic disease refractive error is not very familiar to most people, but people are not unfamiliar with myopia, farsightedness and astigmatism. Refractive error refers to abnormal refractive states such as myopia, farsightedness, astigmatism, and anisometropia.

Refractive error can generally be corrected with glasses, and the glasses people wear are similar in appearance, but the nature of glasses worn by myopia, farsightedness, and astigmatism is not the same, and they need to be corrected with a concave lens for myopia, convex lens for farsightedness, and cylindrical for astigmatism

My son is 5 years old, refractive error: Wu Jian considered myopia, and wore glasses after suffering from myopia, in addition to correcting refractive clear vision, another important role is to prevent the adjustment and collection function of the eye from being out of balance. Therefore, after suffering from myopia, even if you are mildly myopic below 300 degrees, as long as it has affected the balance of eye adjustment and collection, especially if there is hidden strabismus, you must wear glasses, so as to avoid further loss of balance in adjustment and collection, which will have a negative impact on the healthy development of the eye over time.

Blunt contusion of the lacrimal tubule with refractive error: Hello Xuan Cunwang: If the excimer can't do it, the posterior chamber intraocular lens implantation surgery can be performed**, and the myopia can only be laser**.

Refractive error amblyopia: Hello Xuan Cunwang, it is not easy to recover, it is recommended that you check it in **.

Refractive error is divided into four types: myopia, farsightedness, astigmatism and presbyopia, and the clinical manifestations of refractive error can not only affect vision, but also cause visual fatigue. The details are as follows:

1. Farsightedness 1) Normal visual acuity or normal distance vision, and decreased short-sightedness pants. The higher the degree of farsightedness, the more pronounced the visual acuity loss;

2) Fatigue symptoms occur when looking at things;

3) At the same time, because of excessive accommodation, the aggregation effect is enhanced, and esotropia is also prone to occur;

4) Excessive eye fatigue can lead to conjunctivitis, dry eye syndrome and so on.

2. Myopia 1) Decreased distance vision, normal near vision;

2) The adjustment of the eyes is reduced, the collection is insufficient, and exotropia or exotropia is prone to occur;

3) Fundus changes: high myopia causes degenerative lesions, macular degeneration, hemorrhage, vitreous opacity, retinal tear or retinal detachment.

3. Astigmatism 1) Mild normal vision, high astigmatism, decreased near and far vision, double vision when seeing;

2) Visual fatigue and pseudomyopia;

3) The child will tilt his head and squint;

4) Some are accompanied by headaches and other discomforts.

4. Presbyopia: People over 40 years old gradually lose the ability to adjust their eyes, which is manifested as unclear vision and inability to read books and newspapers.

Refractive error refers to the fact that the human eye is in a state of adjustment and relaxation, and the parallel light rays from 5m away enter the eyeball, and after the refraction of each refractive medium of the eye, it cannot form a focus on the retina or the formed focus cannot fall on the retina, so that a clear image cannot be formed on the retina; Presents with decreased near or distance visual acuity, blurred vision;

Refractive errors include: myopia, farsightedness, astigmatism, and presbyopia.

Myopia is the formation of the focal point in front of the retina, and the vision is far away;

Hyperopia is formed after the focus of the retina, and farsightedness and nearsightedness are difficult;

Astigmatism is not a focal point, but a focal line or multiple diffuse focal points;

Presbyopia, on the other hand, is due to the natural aging of the lens in the eye, which is manifested as distant displacement of near point and difficulty in seeing near and near;

Refractive errors can be corrected with glasses;

Refractive error is when the eye accommodates relaxed, and the parallel light from 5 m away cannot be clearly imaged on the retina after being refracted by the refractive system of the eye. It includes farsightedness, myopia, and astigmatismYou can compare it according to your situation or go to the eye hospital for a check-up.