Why is 40 years old a hurdle?

Review expert: Liu Dongbao

Shenyang Red Cross Hospital Ophthalmology Chief Physician

Lao Hua, in the eyes of many people, is undoubtedly synonymous with aging. Some people treat it as a flood beast, and they fall into the anxiety of getting old after they are suffering; others think they are young, and their body vitality is not dry with the old flowers. However, in fact, Laohua may appear after we are 40 years old. It is much closer to us than we think.

Laohua is a normal physiological aging phenomenon. Everyone will have such a situation when they reach a certain age group. It is mainly manifested that the objects nearby are not clear. Generally, the goals need to be seen a little to see. With age, this symptom will become more and more obvious.

Source 丨 hippoppx

There are many influencing factors of old flowers. In addition to the difference in genetic differences in each person, there are also refractives, physical fitness, geographical location, climatic conditions, and vision. These factors will affect the early and severity of the symptoms of the old flowers.

Why is the eyes old flowers?

Under normal circumstances, after the light enters the eyeball, it will pass through the cornea and crystal, the light will refract here, and then pass through the vitreous body, and finally focus on the retina. thing.

Source 丨 pixabay

During the processing of light, the crystal body plays a main focusing role. When looking at the distant objects, the ciliary muscle relaxation, stretch the lens into a flat shape to reduce the refraction ability of the eyeball; while looking at the objects near, the ciliary muscle contraction, the crystal shape is raised, making the eyeball refractive ability ability Increase.

However, with the age of age, especially after the age of 40, the retinal sensitivity and color sensation will gradually deteriorate, the contraction ability of the ciliary muscles will gradually decrease, and the elasticity of the crystal will gradually weaken. Eye regulation has decreased, and the focus of the distance can no longer be successfully completed, that is, the symptoms of old flowers cannot be seen clearly. This is why our vision will become worse and worse after the age of 40.

Source 丨 hippoppx

Generally speaking, humans around 40 years of age have begun to aging in the retina of the eye, and this aging is caused by a certain extent by the mitochondria that generate energy and enhanced cell function. In our eye structure, the mitochondrial density in the retinal light sensor cells is the largest, which means that they need a lot of energy in daily work. With the gradual decrease in the supply of mitochondria in the cells, the lack of energy in the sensor cannot work normally, so the retina will be faster than other organs.

Can Hongguang treat old flowers?

Recently, a study on retina has attracted people's attention. According to foreign media reports, a study published in the Scientific Report of the University of London, the University of London, England, pointed out that Hongguang has a considerable help to improving our vision and delaying the aging of vision. Once under light, it can slow down the natural decline in vision.

Old flower glasses have an enlarged effect

Source 丨 Wikipedia Encyclopedia

Scientists have done a small clinical trial. They invite 24 volunteers between the ages of 28-72 and have not suffered from eye-related diseases. Let them watch 3 to 5 minutes of specific LED flashlights every day. The 670 -nanometer wavelengths of the 670 nanometer lasted for two weeks.

Researchers found that the sensitivity of the light sensitivity cells on the retina before and after the experiment found that the dark red light of this wavelength does not have a significant impact on young subjects. Function; and for people around 40 years old and above, the effect of dark red light is very obvious. Some of them even increased by nearly 20%of the sensitivity of cone cells, which has greatly improved the perception and resolution of strong light and color.

Source 丨 newatlas.com

In this regard, the researchers said that the dark red light between the wavelength range between 650nm-100nm can improve the performance of mitochondria and increase energy output in the cell, thereby improving the function of cone cells. Because the treatment methods of dark red optical ophthalmology that ordinary people can accept are still scarce, scientists believe that the success of this study will undoubtedly indicate that the treatment of home ophthalmology will become easier and simple. Crowd.

Of course, the current research results show that the initial conclusion of "red light can improve vision" is only applicable to middle -aged and elderly people, and the role played by adolescent groups is minimal. It may be because the youth cell metabolism is strong and the mitochondrial function capacity is strong. Therefore, it is not necessary to increase the energy supply of cells through the stimulation of external red light.

Seeing this, some friends may ask, can it be explained by an experiment with a 24 person? It is true that the size of this experiment is only a preliminary judgment. However, as scientists continue to study in depth, further breakthroughs will be made in the future. But at present, everyone should not take a look at the red light. Whether there will be certain risks in which there is still need to be sophisticated.

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