Abstract: excessive eye use such as watching TV, playing computer and reading makes more and more teenagers suffer from myopia, Many young parents think their children are close when they see them reading (she) is short-sighted. However, experts point out that preschoolers can’t see clearly, which is likely to be hyperopia. In infancy, the eyeball is a flat sphere, that is, hyperopia eyeball. It doesn’t gradually grow into a positive sphere, that is, emmetropia eyeball, until the age of 6-8. According to statistics, more than 90% of preschoolers may actually have hyperopia, and most of them are hyperopia They are physiological and are the manifestation of normal eye development, but about 20% of children’s hyperopia is abnormal., 90% of preschool children are hyperopia. When looking at the album, Binbin, who is almost 5 years old, always brings the album to his eyes. His mother sees this posture and is worried that his child will be short-sighted in the future, so she reminds him to put the album away every time, but the child cries, “you can’t see clearly if you put it away”. Is Binbin suffering from myopia? Mother quickly took him to the hospital ophthalmology for treatment, but the doctor diagnosed him as “high hyperopia”! This makes Binbin’s mother wonder: if you can’t see clearly, you should take a closer look. This is obviously myopia. Why does the doctor say it’s hyperopia?, Huang Xuelin, director of Ophthalmology at Guangdong maternal and child health hospital, said that when children don’t see objects clearly, parents first think of myopia. In fact, 90% of preschool children are hyperopia, which is the result of children’s eye development. If a person’s eyeball is regarded as a sphere, it has three axes: vertical axis, horizontal axis Sagittal axis (i.e. ocular axis), the length of the three axes of a normal sphere is equal. After birth, the baby presents a flat sphere, i.e. hyperopia eyeball, because the eyeball is small and the ocular axis is short. Until the age of 6-8, it gradually grows into a normal sphere with the same three axes and about 24mm long, i.e. orthoopia eyeball. If the ocular axis continues to grow, it will become myopia. Therefore, generally speaking, infants and young children Children’s myopia is only about 1% ~ 1.5%, while more than 90% of preschool children may have hyperopia. Of course, most of them are physiological, which is the expression of normal eye development. However, 20% ~ 25% of hyperopia is abnormal or pathological. It is the main cause of low vision and eye dysplasia in preschool children, which should be paid enough attention by parents., “Hyperopia myopia” don’t wear myopia glasses. Children’s hyperopia will also show “myopia”. Huang Xuelin explained that the so-called hyperopia is that after the reflection of external scenery enters the intraocular refractive system, the focus falls behind the retina and cannot be clearly imaged on the retina, resulting in unclear vision from far to near. However, due to the strong adjustment ability of children’s ciliary muscle and lens, it can make the intraocular lens convex, increase the intensity of bending light, shift the focus behind the retina to the retina, and make mild hyperopia invisible, thus showing the illusion of good vision. However, if the degree of hyperopia is deep, the adjustment of the eye itself is difficult to make up for this difference, and there will be obvious blurred vision at this time. In order to see the target clearly, we can only shorten the distance to enlarge the image target, so as to increase the recognition ability. Therefore, it shows a posture that looks like myopia, which is called “hyperopia myopia” in medicine. In this case, we should pay attention to distinguish it from myopia. We must not match glasses according to myopia, so as not to increase the burden of eye adjustment., High hyperopia is easy to develop into strabismus and amblyopia.
in infancy, the eyeball is a flat sphere, that is, the hyperopia eyeball. Until the age of 6-8, it gradually grows into a positive sphere, that is, the emmetropia eyeball. According to statistics, more than 90% of preschool children may actually have hyperopia, most of which are physiological and the performance of normal eye development, but about 20% of children’s hyperopia is abnormal.
90% of preschool children are hyperopia.
Binbin, who is almost 5 years old, always brings the picture album to his eyes when looking at the picture album. His mother sees this posture and is worried that his child will be short-sighted in the future, so she reminds him to put the picture album away every time, but the child cries, “you can’t see clearly when you put it away”. Is Binbin suffering from myopia? Mother quickly took him to the hospital ophthalmology for treatment, but the doctor diagnosed him as “high hyperopia”! This makes Binbin’s mother wonder: if you can’t see clearly, you should take a closer look. This is obviously myopia. Why does the doctor say it’s hyperopia?
Huang Xuelin, director of Ophthalmology at Guangdong maternal and child health hospital, said that when children can’t see clearly, parents first think of myopia. In fact, 90% of preschool children are hyperopia, which is the result of children’s eye development. If a person’s eyeball is regarded as a sphere, it has three axes: vertical axis, horizontal axis Sagittal axis (i.e. ocular axis), the length of the three axes of a normal sphere is equal. After birth, the baby presents a flat sphere, i.e. hyperopia eyeball, because the eyeball is small and the ocular axis is short. Until the age of 6-8, it gradually grows into a normal sphere with the same three axes and about 24mm long, i.e. orthoopia eyeball. If the ocular axis continues to grow, it will become myopia. Therefore, generally speaking, infants and young children Children’s myopia is only about 1% ~ 1.5%, while more than 90% of preschool children may have hyperopia. Of course, most of them are physiological, which is the expression of normal eye development. However, 20% ~ 25% of hyperopia is abnormal or pathological. It is the main cause of low vision and eye dysplasia in preschool children, which should be paid enough attention by parents.
“hyperopia myopia” don’t wear myopia glasses
children’s hyperopia will also show “myopia”. Huang Xuelin explained that the so-called hyperopia is that after the reflection of external scenery enters the intraocular refractive system, the focus falls behind the retina and cannot be clearly imaged on the retina, resulting in unclear vision from far to near. However, due to the strong adjustment ability of children’s ciliary muscle and lens, it can make the intraocular lens convex, increase the intensity of bending light, shift the focus behind the retina to the retina, and make mild hyperopia invisible, thus showing the illusion of good vision. However, if the degree of hyperopia is deep, the adjustment of the eye itself is difficult to make up for this difference, and there will be obvious blurred vision at this time. In order to see the goal, we can only shorten itDistance enlarges the image target to increase the recognition ability, so it shows a posture that looks like myopia, which is called “hyperopia myopia” in medicine. In this case, we should pay attention to distinguish it from myopia. We must not match glasses according to myopia, so as not to increase the burden of eye adjustment.
high hyperopia is easy to develop into strabismus amblyopia
when the adjustment ability of the eyes of children with hyperopia is forced to be strengthened, it will increase the excitability of the internal rectus muscle. If the hyperopia degree of one eye is serious, in order to make the eye see the scenery clearly, the eye will continue to increase the adjustment strength, and finally, the eye will become an internal strabismus. Many strabismus patients are used to working and studying with the gaze eye, and put the unused strabismus aside. In this way, over time, the strabismus eye will become amblyopia.
in addition, due to the long-term excessive contraction of the internal rectus muscle, the muscle is in fatigue symptoms for a long time, resulting in eye soreness, orbital pain and dizziness. At this time, children may be distracted in class and hate reading and writing.
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therefore, if parents find that their children watch TV close, tilt their heads or squint, or complain that they will feel blurred handwriting, eye swelling and headache after reading for a long time, they are advised to take their children to the hospital for examination immediately, If the child is defined as hyperopia (including hyperopia astigmatism), appropriate treatment shall be carried out according to the doctor’s instructions (including wearing appropriate glasses, amblyopia treatment, etc.), and strive to improve his eyesight to normal before the age of 7 without delay, so as to avoid the formation of cockfighting eyes (esotropia) and amblyopia. For the treatment of hyperopia in children, the older the age, the worse the treatment effect, and the more difficult it becomes to return to normal.
tips:
treatment of hyperopia
1. For low-grade hyperopia (i.e. children with less than 3 diopters), since most children with low-grade hyperopia are physiological hyperopia, at this time, if their vision is normal or close to normal and there is no sense of eye fatigue, they can not be treated (without glasses).
2. For those with visual fatigue symptoms without amblyopia, the main purpose is to eliminate the discomfort symptoms, they can wear glasses appropriately and retain 0.5 ~ 1 diopter.
3、 For medium altitude hyperopia (i.e. children with more than 3 diopters) have different degrees of decline in near and far vision, most of them will be accompanied by amblyopia and even visual fatigue symptoms. For these children, the main purpose is to treat amblyopia and eliminate visual fatigue symptoms. Glasses can be equipped in stages, but the first glasses are based on the principle of the highest degree of the best vision, and the degree of wearing lenses can be adjusted after 3-6 months of adaptation 。
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in short, parents should not take children’s hyperopia lightly, nor should they arbitrarily give their children products and drugs on the market without treatment. These wrong ideas and practices will not only delay children’s treatment, but also lead to more complex conditions. What parents should do is to find that their children’s eyes are abnormal, they should go to the ophthalmology department of a regular hospital for systematic examination as soon as possible, and follow the doctor’s treatment plan to avoid affecting their children’s vision.