What is the normal value of vision when a child grows up? I'm afraid many parents don't know.
The lower limit of normal visual acuity in children aged 3 to 5 years is 0.5;
The lower limit of normal visual acuity in children over 6 years of age is 0.7;
Children's vision does not reach 1.0 until after the age of 7.
Parents should be clear about the "normal value of children's vision" so as not to blindly think that children have low vision or excessive correction of children's vision.
Amblyopia refers to the time when you use myopia, farsightedness or astigmatism glasses that cannot be corrected to normal vision, which is called amblyopia. Compared with myopia, amblyopia may be an eye disease that is relatively unfamiliar to parents, and it is an eye disease with no obvious organic lesions of the eyeball, and the best corrected vision of one or both eyes is lower than the corresponding age. In layman's terms, after wearing glasses, the best vision still does not reach the vision level of peers.
Signs of amblyopia in the eyes you know several
Normal vision values have not been reached
The ophthalmologist reminds that after the child is 3 years old, a complete vision and eye examination should be performed. If the vision is not yet 0.5 at 3 to 5 years old and the vision is still below 0.7 at 6 years old, the possibility of amblyopia is considered.
Abnormal behavior
For example, when observing eye-catching objects, you can't find out in time, whether you are close when watching TV, whether you often fall, wrestle, bump and bump when walking, you can't get things accurately, you are not sensitive to eye-catching items such as light sources, and you are slow to respond.
Monocular masking experiment
Covering one eye, looking at the object with one eye, if you tear the cover, it means that the unconcealed eye may have poor vision, which is suitable for early childhood.
Amblyopia is a common disease and multiple diseases in children's development. There is no obvious organic lesion of the eyeball, and the best corrected vision in one eye or both eyes is called amblyopia when the vision below the corresponding age is lower, or the vision of both eyes is 2 lines or more, and the eyes with low vision are amblyopia. If it is not prevented in time, the vision of the affected eye will be permanently low, and the child with amblyopia will have a vague sense of three-dimensionality and cannot accurately judge the position, distance, direction and so on of the object. It has an impact on both mental health and intellectual development.
Treatment of amblyopia is age-related
Amblyopia is a separate disease, it is two diseases with myopia and farsightedness, myopia or hyperopia can wear glasses to correct vision to normal far away, but amblyopia is to wear any glasses can not make the vision reach normal, in this case is amblyopia, many children with amblyopia are accompanied by farsightedness, accompanied by astigmatism, may also be accompanied by myopia.
When exactly is the most appropriate time for a child with amblyopia to be treated
Of course, the sooner the better, because the child's vision development is from birth after the beginning of development, until the normal 12 years old, often the child's vision and eyeball development to normal, before the age of 7 years old to treat amblyopia is the most appropriate time, because at this time the child's vision development by the external environment is relatively large, intervention treatment recovery is also relatively fast.
If you miss the vision development period, the effect of re-treatment is extremely reluctant. 3 to 7 years of age is a critical period for the treatment of amblyopia. Parents must observe the child's development more, and if they suspect amblyopia, they should go to the hospital for treatment in time.