What’s the matter with “hyperopia reserve”?

Abstract: Children’s myopia will be reflected through subtle actions. For example, when looking at distant objects, they will unconsciously squint or pull the corners of their eyes, tilt their head to watch TV, or like to run to the TV to watch TV., To prevent and understand myopia, we need to understand a new concept: hyperopia reserve. The formation of myopia is due to the lengthening of the ocular axis, which changes the imaging position in the eyeball, makes it clear to see near and blurred to see far. The eyes of newborns are in the process of growth and development. The eyeball is small and the eye axis is short, forming the state of hyperopia. This hyperopia degree is the “physiological hyperopia reserve”. However, this hyperopia state will gradually weaken or disappear around the age of 12 with the growth and development of children and the maturity of eyeballs. If it disappears too quickly, it will become myopia., “Hyperopia reserve” varies by age. Generally, both eyes of newborns are hyperopia. However, with the growth and development, it gradually tends to be normal until the preschool basically reaches normal. In other words, the standard of normal vision of children under the age of 5 is different from that of adults, and this standard is closely related to age., Children aged 4-5 years have a physiological diopter of 200-250 degrees, that is, they have a hyperopia reserve value of 200-250 degrees; 175-200 degrees hyperopia at the age of 6-7; 150 degree hyperopia at the age of 8; 125 degree hyperopia at the age of 9; 10 years old, 100 degrees hyperopia; 11 years old, 75 degrees hyperopia; 12 years old, 50 degrees hyperopia. If, for children aged 6-7, if the hyperopia reserve value is much different from 200 degrees, only 50 degrees, it means that the child is likely to get myopia in primary school., The standard vision of adolescents and children is closely related to age and is affected by growth and development factors. Literature shows that the standard visual acuity of children of different ages in China is 0.5-0.6 at the age of 2, 0.9 at the age of 3, 0.9-1.0 at the age of 4, and 1.0 and above at the age of 5 and above., There are signs of myopia. Children’s myopia will not happen overnight. It needs a process. If parents can pay more attention to their children’s abnormal behavior during this period, they may try to prevent the occurrence of myopia.,

to prevent and understand myopia, we need to understand a new concept: hyperopia reserve. The formation of myopia is due to the lengthening of the ocular axis, which changes the imaging position in the eyeball, makes it clear to see near and blurred to see far. The eyes of newborns are in the process of growth and development. The eyeball is small and the eye axis is short, forming the state of hyperopia. This hyperopia degree is the “physiological hyperopia reserve”. However, this hyperopia state will gradually weaken or disappear around the age of 12 with the growth and development of children and the maturity of eyeballs. If it disappears too fast, it will become myopia.

“hyperopia reserve” are different in different ages.

generally, the eyes of newborns are hyperopia. However, with the growth and development, it gradually tends to be normal until the preschool basically reaches normal. In other words, the standard of normal vision of children under the age of 5 is different from that of adults, and this standard is closely related to age.

children aged 4-5 years have physiological diopter of 200-250 degrees, that is, they have hyperopia reserve value of 200-250 degrees; 175-200 degrees hyperopia at the age of 6-7; 150 degree hyperopia at the age of 8; 125 degree hyperopia at the age of 9; 10 years old, 100 degrees hyperopia; 11 years old, 75 degrees hyperopia; 12 years old, 50 degrees hyperopia. If a 6-7-year-old child’s hyperopia reserve value is much different from 200 degrees, only 50 degrees, it means that the child is likely to get myopia in primary school.

and the standard visual acuity of adolescents and children is closely related to age and is affected by growth and development factors. The literature shows that the standard visual acuity of children of different ages in China is 0.5-0.6 at the age of 2, 0.9 at the age of 3, 0.9-1.0 at the age of 4, and 1.0 and above at the age of 5 and above.

myopia is a precursor. Myopia in

children will not occur overnight. It needs a process. If parents can pay more attention to their children’s abnormal behavior during this period, they may try to prevent the occurrence of near vision.

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children’s myopia will be reflected through subtle actions. For example, when looking at distant objects, they will unconsciously squint or pull the corners of their eyes, tilt their head to watch TV, or like to run to the TV to watch TV; Blink or rub your eyes frequently; Write with your head too low, etc. Usually pay more attention to observation can find children’s abnormal vision in time.

if you want to have good eyesight, don’t practice the piano and do more exercise.

human eyes have two golden periods of rapid development, one is between the ages of 3 and 5 and the other is between the ages of 12 and 15. In these two Golden periods of rapid development, the prevention of near vision is often ignored. Preschool children are busy learning painting, calligraphy, literacy, playing the piano and foreign languages. However, this will consume a lot of hyperopia reserve value, thus laying a hidden danger for myopia.

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learning piano and other musical instruments is an important factor in the development of myopia in many children. While playing the piano, you should also read the staff, which is like reading in sports. It takes a few hours to practice. Some children can deepen more than 200 degrees a year. Over time, it is easy to cause myopia.

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and outdoor activities such as tennis, kite flying, cycling and mountaineering can not only contact more sunlight and promote the secretion of dopamine, dopamine can block the growth of ocular axis and reduce the risk of rapid development of ocular axis; In addition, ultraviolet can increase the synthesis of vitamin D in the body and harden the sclera, which is also helpful to slow down the growth of ocular axis.