What is normal vision?

Check whether your eyesight is normal, and see how far away you can see objects. Whether it is your own vision score chart, decimal vision chart, or logarithmic vision chart, they are all successfully made based on the same principle. But what is normal vision? Let’s take a look at the following introduction.

Generally speaking, for people, normal naked vision can actually reach 1.0, or 5.0. People with refractive errors actually refer to people with myopia, hyperopia, and astigmatism, which is also a phenomenon. This condition of naked eye vision will be lower than normal. But after wearing glasses, it can be corrected to normal. But what is normal vision is very important.

Every summer vacation is the peak season for children to treat myopia. The degree of myopia continues to deepen, which not only lays the hidden danger of severe myopia and is not conducive to the healthy development of physical and mental health. High myopia may also lead to serious complications in adulthood, such as posterior scleral staphyloma, retinal atrophy and degeneration, hemorrhage and holes, retinal detachment, cataracts, glaucoma, etc. Blindness caused by myopia and its complications has become the third cause of blindness (after cataracts and macular degeneration). The care and prevention of myopia in children is far from enough by emergency measures during the summer vacation. It must become a normal practice and a good lifestyle.

Children's vision is more or less within the normal range. Generally speaking, as children's physical and intellectual development continues, their vision gradually improves. The visual acuity of a 4-year-old child is 0.4-0.6; the visual acuity of a 5-year-old child is 0.6-0.8; and before school age, it can basically reach normal visual acuity of 1.0. It should be made clear that some children's vision is slightly lower than that of their peers, but their refractive power is within the normal range. Their vision will return to normal with age, which means their visual function development is slightly delayed. Some children have problems with their refractive power, and it will be difficult for their vision to reach normal levels in the future. Therefore, when you find that your child's vision is below the normal range, you should go to the hospital for consultation and treatment in time.

We must know more about what is the normal vision of people, because some people's more normal vision is identified according to different age groups. For example, the vision of school-age children should be at 1.0, so we only need to have some understanding of these relatively normal visions.