Whether our eyesight is good or not is directly related to our life and work. If our eyesight is not good when we are children, it will be affected in various aspects as we grow up. After all, we mainly rely on our eyes when interacting with external things. Therefore, many parents attach great importance to their children's eyesight. So, what are the normal values of vision s and c for a 3-year-old child?
What are the normal values for visual acuity s and c in a 3-year-old child?
S represents the degree of the spherical lens, including myopia and hyperopia. Hyperopia is represented by+, and myopia is represented by -. C represents the degree of the cylindrical lens, which is the degree of astigmatism. A represents the axial position of the cylindrical lens. R is for the right eye, and the degree of the right eye is 550 degrees for myopia, 5 degrees for astigmatism, and 40 degrees for the left eye. The degree of the left eye is 350 degrees for myopia, and 00 degrees for astigmatism, based on the axial position of astigmatism.
What should children eat for vision loss?
1. Lutein and zeaxanthin are the main components of the macula of the retina. Lutein can effectively alleviate eye fatigue and improve dryness and dryness in the eyes.
2. Protein: In terms of sclera, it can become the tough shell of the eyeball because it contains various essential amino acids, forming a very strong fibrous tissue. Although the sclera has a certain degree of toughness, it is still relatively weak in the anterior posterior axis of the eye. Animal based foods such as meat, fish, eggs, and milk not only contain abundant protein, but also contain all essential amino acids.
3. Calcium: Calcium is the main component of bones and also the main component of sclera. The high content of calcium plays a major role in enhancing the toughness of the sclera. Animal bones such as cow bones, pig bones, and sheep bones are rich in calcium in food and are easily absorbed and utilized by the human body. Other products such as dairy products, legumes, shrimp skin, dried shrimp, eggs, rapeseed, bok choy, peanuts, jujubes, etc. also contain a high amount of calcium.
4. Zinc: Myopia patients generally lack chromium and zinc, and they should eat more foods that are high in zinc. Foods such as soybeans, almonds, seaweed, kelp, yellow croaker, milk powder, tea, meat, and liver contain a high amount of zinc and chromium, which can be increased in moderation.
5. Vitamins: are essential nutrients for the human body. Although the human body has a small demand for them, they play an extremely important role in the metabolism of matter and energy in the human body. When using dietary therapy to treat myopia, it is necessary to supplement more vitamin A appropriately B1、B2、C、 And E. Foods rich in vitamins include eggs, milk, meat, fish, liver, and fresh vegetables and fruits.
Now everyone knows what the normal values of vision s and c are for a 3-year-old child. Generally, the vision of a 3-year-old child is relatively normal, but it cannot be ruled out that some children may experience vision loss due to genetic factors. If a child is found to have problems after a vision test, parents should help adjust and treat them according to the guidance of a doctor.
