Vitamin A is the key to protect your eyes coreldraw快捷键大全

Baby eye compulsory vitamin A is crucial to [Abstract] parenting experts remind parents, 0-3 years old baby is a golden period of visual development, if you want to develop with bright eyes at this stage, in addition to eyesight of regular inspection and cultivate good habits with the eye, vitamin A supplement is very important! What is the use of vitamin A? In the visual system of the baby, maintain the dark visual function is the most important one called rhodopsin "photosensitive material, vitamin A is the composition of rhodopsin indispensable raw materials. If the body lacks vitamin A, rhodopsin synthesis quantity is reduced, the ability to adapt to the dark environment will drop, serious can cause night blindness. In addition to constitute an important photosensitive material, vitamin A is also an important physiological function, that is to maintain the integrity of epithelial cells of the body, of course, our eyes are epithelial cells (such as conjunctiva, corneal and other parts), if insufficient intake of vitamin A, lacrimal duct epithelial cells appeared diversification, obstruction of nasolacrimal duct. Cannot tear secretion, tear eyes due to lack of lubrication and dry hair, at the same time, conjunctival and corneal epithelial cells and degradation caused by drying, eye discomfort, dry hair, a burning sensation, photophobia, tears and dry eye symptoms, but also may be due to decreased resistance caused by infection (such as conjunctivitis, keratitis). No severe lacrimal gland tear secretion, corneal softening, ulcer, perforation, blindness. Scientific research shows that 3 years old is a critical period for the development of the baby’s eyes, this period of adequate vitamin A is essential for the development of the baby’s vision. At the same time, child care experts also pointed out that vitamin A not only has an important role in the development of children’s vision, to promote the growth of infants and young children is also significant. When the lack of vitamin A in infants and young children, the bone tissue will be denatured, and can cause damage to the renal tubular epithelium, affecting the reabsorption of calcium, bone mass decreased. The lack of vitamin A can also cause the epiphyseal bone disorder, make the child growth retardation, slow growth, bad teeth. In addition, vitamin A can also promote brain development, enhance body resistance, promote hematopoietic function, etc.. Where do vitamin A come from? According to a survey by the WHO, infants and young children with vitamin A deficiency is a common phenomenon in developing countries, China is a moderate lack of vitamin A in the country, some areas of severe lack of. "China vitamin A deficiency children under the age of six survey" shows that the overall Chinese children aged 0-6 vitamin A deficiency rate was 11.7%, subclinical deficiency rate was 39.2%, a total of more than half of the insufficient intake of vitamin A. Less than 6 months of the baby is more serious, vitamin A deficiency rate of 33.4%, sub clinical lack of rate of 45.70%, which shows that nearly half of our country within 6 months of the existence of low levels of vitamin A in children’s problems. [Abstract] parenting experts remind parents, 0-3 years old baby is a golden period of visual development, if you want to develop with bright eyes at this stage, in addition to eyesight of regular inspection and cultivate good habits with the eye, vital vitamin A supplement! Faced with such a grim situation, preventive vitamin A supplementation. 1, pregnant Mommy should.相关的主题文章:

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