Abstract: both parents are myopic, especially high myopia. We would recommend parents to do routine eye examination before their children’s school age, such as eye axis, corneal curvature, diopter, etc., Some children are short-sighted as soon as they are born. Some children are not short-sighted at birth, but high myopia eventually occurs. Some children have always been emmetropia. Why? The clinical investigation on the history of myopia in children and their parents shows that the incidence of myopia in children is related to the myopia of their parents. The children whose parents are myopic have the highest probability of myopia, and the children whose parents are not myopic have the lowest probability of myopia. The occurrence of congenital myopia and some high myopia is usually determined by genetic genes., The distance from the cornea lens vitreous retina (the innermost layer of light) to the surface layer that receives light from the eyeball is regarded as a central axis of the optical system in physics, which is the so-called “ocular axis”. The ocular axis passes through the central part of the corneal surface The vertical line of the (anterior pole), the node of the eye and the turning point of the eye are all on the optical axis. The intersection point of this axis behind the sclera is the posterior pole of the eye. The distance between the anterior and posterior poles is the length of the eye axis. Excluding the corneal curvature, the length of the eye axis determines the diopter of the human eye. The eye axis of a normal person is about 24mm. Excluding the influencing factors of corneal curvature, if it is greater than 24mm, it can generally be considered as myopia. Children inherit from their parents Myopia occurs from time to time in the clinic. For example, not long ago, a 12-year-old child’s myopia diopter was -9.0d, corneal curvature was normal, and the length of eye axis was 27.09mm and 27.15mm. Through consultation, it was found that both parents of the child were highly myopia., Therefore, both parents are myopic, especially high myopia. We would suggest parents to have a routine examination of their children’s eyes before school age, such as eye axis, corneal curvature, diopter, etc., Generally speaking, children will have some hyperopia before school age. If the child’s hyperopia degree is very low or the eye axis is fast approaching the normal value, the probability of myopia is relatively high. Parents need to pay attention to their children’s eye habits, protect their eyes and avoid myopia.,
some children are short-sighted as soon as they are born. Some children are not short-sighted at birth, but high myopia eventually occurs. Some children have always been emmetropia. Why? The clinical investigation on the history of myopia in children and their parents shows that the incidence of myopia in children is related to the myopia of their parents. The children whose parents are myopic have the highest probability of myopia, and the children whose parents are not myopic have the lowest probability of myopia. The occurrence of congenital myopia and some high myopia is usually determined by genetic genes.
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are the outermost layers that receive light from the eyeball, that is, the distance from the cornea lens vitreous retina (the innermost layer to feel light). They are regarded as a central axis of the optical system in physics, which is the so-called “eye axis”. The ocular axis passes through the central part of the corneal surface The vertical line of (anterior pole), the node of the eye and the turning point of the eye are on the optical axis. The intersection point of this axis behind the sclera is the posterior pole of the eye. The distance between the anterior and posterior poles is the length of the eye axis. Excluding corneal curvature, the length of the eye axis determines the diopter of the human eye. The eye axis of normal people is about 24mm. Excluding the influencing factors of corneal curvature, if it is greater than 24mm, it can be considered as myopia.
Myopia of children’s genetic parents occurs from time to time in the clinic. For example, not long ago, a 12-year-old child’s myopia diopter was -9.0d, corneal curvature was normal, and the length of eye axis was 27.09mm and 27.15mm. Through consultation, it was found that both parents of the child were highly myopia.
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therefore, both parents are myopia, especially high myopia. We will suggest parents to do routine eye examination before their children’s school age, such as eye axis, corneal curvature, diopter, etc.
generally speaking, children will have some hyperopia before school age. If the child’s hyperopia degree is very low or the eye axis is close to the normal value, the probability of myopia is relatively high. Parents need to pay attention to their children’s eye habits, protect their eyes and avoid myopia.