myopia. It can be said that most people will have it now. Due to the use of electronic products, many people are short-sighted when they are very young. So what’s wrong with the different degrees of myopia in the left and right eyes? Can myopia be alleviated? Come and have a look with me.
What’s wrong with the different degrees of myopia in the left and right eyes?
people are balanced. 4 the whole body is relatively symmetrical, not absolutely symmetrical. The diopters of many eyes are different, just like people’s fingers. From a physiological point of view, everyone has a main eye, which may be a left eye or a right eye. What the main eye sees will be preferentially accepted by the brain, and what it sees will be relatively clear.
most of the reasons are related to the bad habits of using eyes, especially sleeping and reading at night. Of course, some people are caused by congenital development. There are great differences in eyesight or diopter between their eyes, such as congenital astigmatism, form deprivation amblyopia and so on.
How should myopia be prevented?
there are many methods to prevent myopia. Any measure conducive to reducing visual fatigue and relaxing eye adjustment can be tried. Of course, other ways can be explored, but they should be scientific, reasonable, beneficial and harmless. It is necessary to prevent myopia in the early stage of school-age, i.e. there is a certain period of short-sightedness. Therefore, it is necessary to pay attention to the prevention of short-sightedness in the early stage of school-age, i.e. there is a certain period of short-sightedness. It is necessary to pay attention to the prevention of short-sightedness, i.e. there is a certain period of short-sightedness in the early stage of school-age, Through the regular monitoring of visual changes and qualitative examination of visual acuity, the prevention objects can be found and determined early. According to the epidemiological investigation, the following objects are prone to myopia and can be used as key prevention objects:
① workers with bad eye hygiene habits and too close proximity. ② Parents are myopic.
③ for those whose vision instability has decreased from 1.5 to 1.2 or 1.0 (in fact, they may have myopia), the preventive measures include that the continuous close eye use time should not be too long; Actively participate in outdoor activities; In addition, we can adopt distant vision method or various vision and adjustment collective training methods, so as to regularly increase visual distance, broaden vision, relax adjustment and maintain normal visual function. At ordinary times, we should ensure adequate sleep, combine work and rest, balance diet and reasonable nutrition,
2. Prevent the development of myopia
for all myopia, In particular, those with pathological myopia should try to prevent the myopia diopter from deepening, maintain or strive to improve the visual function. In addition to the above methods to prevent myopia, they should also pay special attention to the rational use of eyes, choose appropriate work, avoid excessive use of eyes and adverse visual stimuli, correct ametropia, wear appropriate glasses, and wear glasses frequently for pathological myopia, Choose to use near and far, or wear contact glasses, which may reduce or stop the development of myopia, including glasses (bifocal lenses, oxygen permeable rigid contact lenses), drugs and surgery.
3. Prevention of myopia complications
the main cause of myopia blindness is its complications, such as amblyopia, retinopathy and glaucoma, which should be prevented. Various methods to prevent myopia from deepening should be taken actively and seriously, In addition to requiring patients to pay regular attention to visual changes, they should also pay attention to any other abnormal phenomena in the early stage of the eye, such as flash sensation, fly (mosquito) disease, visual field defect, progressive or sudden decline of visual acuity (especially near visual acuity), as well as eye acid swelling, pain and night blindness. If there are complications in one eye, they should pay special attention to the other eye, check at any time and find them as soon as possible, Including the changes of intraocular pressure, visual field and eye axis. If necessary, other special eye examinations shall be carried out. The probability of open-angle glaucoma in pathological myopia is high. The changes of fundus and visual field can cover the lesions of glaucoma. Moreover, due to the low hardness of eye wall and low measured intraocular pressure, the diagnosis of glaucoma can be delayed. Therefore, we should be vigilant, When measuring intraocular pressure in pathological myopia, flattening tonometer should be used to eliminate the influence of eye wall hardness. In addition, various inducing factors should be avoided, adverse stimulation to the eyes should be reduced, and violent physical activity should be reduced as far as possible.
4. Promote eye exercises
(1) eye exercises: eye exercises have been designated as eye exercises for school students by the Ministry of education and the Ministry of health. Although some scholars have different views on its effect, it is beneficial and harmless to eye health as long as it can be done seriously in accordance with the regulations.
(2) overlooking method and crystal gymnastics: these two kinds of eye exercises are based on & ldquo; Long term nearsightedness is the main cause of myopia & rdquo; On the contrary, try to look far to prevent the occurrence of myopia. Such methods are introduced in detail in all popular science books on the prevention and treatment of myopia.
(3) finger manipulation: there are two methods, which are described as follows:
① targeted finger manipulation: straighten the index finger of the right hand and place it vertically 15 ~ 25cm below and in front of the two eyes. When the two eyes look at an object 10m away, the two eyes are in a distant state. At this time, the eye axes of the two eyes are scattered, which can make the line of sight of the two eyes parallel, adjust the two eyes to zero and enlarge the pupil, When the two eyes look at the fingers in front of them, the two eyes are in the near reflex state. According to the distance between the index finger and the eyes, for example, when placed at 15cm, it can produce 6.6d adjustment and 6.6m angle (MA). If the two eyes look at distant objects and nearby fingers alternately, it will inevitably make the internal and external muscles of the two eyes move together (Fig. 5), which is a very reasonable eye exercise to prevent myopia.
② finger manipulation without distant target: place one finger vertically in front of the two eyes. When the two eyes look at the nearby fingers, a single look is formed to make the two eyes look close. According to the distance between the fingers and the eyes, the close cooperative training of the internal and external muscles of the two eyes can be carried out in different degrees, but when the subjects look at the imaginary distant target, At the same time, without consciously looking at the nearby fingers (as shown by the dotted line in the figure), the eye axes of the two eyes rotate outward. Since there is no watching target in the distance, the nearby fingers are regarded as two fuzzy finger shadows crossed left and right. Sometimes looking at the immediate fingers and the imaginary distant target, you can perform finger manipulation without far target (Fig. 6), as if moving the fingers up and down left and right, This method is simple and convenient. It can be done anytime and anywhere. If you can adhere to it, it is indeed an economical and effective way to prevent myopia.