Abstract: the critical period of human visual development is from birth to 3 years old. It has long been recognized that assessing the vision of preschool children is the key to diagnose and treat their abnormal vision. Visual abnormalities before the age of 6 have a greater impact., At work, I often hear parents ask: “our children’s vision is only 0.6, is it abnormal? Is it amblyopia?” In fact, this problem can not be generalized. Today, optometrists will join you to understand the problem of children’s visual development., Understand children’s normal visual development. People open their eyes soon after birth. Therefore, people’s visual development begins from birth., From birth to January, although the child has a reaction to light, the visual object is blurred, the eyeball is not fully developed, the visual structure and optic nerve are not mature, and the visual acuity is probably light perception ~ immediate manual;, At 2 months, the child’s visual concentration is obvious, and the visual acuity is about 0.01;, At 3 months, the child can fix the visual object, prolong the fixation time, and move the line of sight with the movement of the object. The visual acuity is about 0.01 ~ 0.02;, At 4 months, the child began to touch things with his hands, indicating that he had a certain sense of gaze direction, and his eyesight was about 0.02 ~ 0.05;, At the age of 6 months, the child blinks more frequently and can accurately see the objects in front of him, with a vision of about 0.06 ~ 0.08;,
at work often hear parents ask: “our children’s vision is only 0.6, is it abnormal? Is it amblyopia?” In fact, this problem can not be generalized. Today, optometrists will join us to understand the problem of children’s visual development.
understand children’s normal visual development
people open their eyes soon after birth, so people’s visual development begins from birth.
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children have light reaction from birth to January, but their visual objects are blurred, their eyeballs are not fully developed, their visual structure and optic nerve are not mature, and their visual acuity is probably light perception ~ visual acuity; At the age of
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for 2 months, the child’s visual concentration is obvious, and the visual acuity is about 0.01 when he looks at the moving object in coordination;
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at 3 months, the child can fix the visual object, the fixation time is prolonged, the line of sight can move with the movement of the object, and the visual acuity is about 0.01 ~ 0.02;
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at 4 months, the child began to touch things with his hands, indicating that he had a certain sense of gaze direction, and his eyesight was about 0.02 ~ 0.05;
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after 6 months, the child blinks more frequently and can accurately see the objects in front of him. The visual acuity is about 0.06 ~ 0.08;
at 8 months, the child can distinguish the distance of objects, and the visual acuity is about 0.1; When
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are 1 year old, their eyesight gradually develops under the stimulation of external light, and they can distinguish the size and shape of objects. Their eyesight is about 0.2 ~ 0.3;
at the age of 2, children’s visual acuity develops most rapidly, with visual acuity of about 0.5 ~ 0.6;
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were 0.6 ~ 0.7 at 3 years old; At the age of 6, it basically reached the adult level, and the visual acuity was 1.0. (the above visual acuity is obtained by comparing the logarithmic visual acuity chart)
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Optometry experts: the critical period of human visual development is from birth to 3 years old. It has long been recognized that assessing the vision of preschool children is the key to diagnose and treat their abnormal vision. Visual abnormalities before the age of 6 have a greater impact. The neural development and physiological growth of infant visual system are very rapid. If visual abnormalities are not diagnosed and treated at this sensitive stage, visual development will be seriously affected.
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ophthalmologists introduced the normal visual acuity standards for preschool children of different ages, that is, the lower limit of normal visual acuity for children aged 3 ~ 5 years is 0.5, and the lower limit of normal visual acuity for children aged 6 and over is 0.7. Therefore, parents should pay attention to preschool during this period. If problems are found, parents are advised to go to a professional optometry center in time.