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Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Science https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ In new research, a certain frequency of red light can enhance people’s eyesight

In new research, a certain frequency of red light can enhance people’s eyesight



Illustration in an article titled

photo: Robin Baker/AFP (Getty Images)

British scientists believe that they may have found a cheap, low-tech method to help solve age-related vision loss. In a small clinical trial, people over the age of 40 were told to stare at the crimson light for three minutes a day, and their vision improved significantly. They report that they can see better colors and distinguish colors better in the dark.

Red light has been widely used as skin treatment. The idea is that longer wavelength light has a unique regenerative effect on mitochondria, which are the parts of cells that process human fuel to keep it running. These wavelengths range from just stopping seeing visible light (dark red) to infrared light. Mitochondria absorb this energy and can theoretically improve their performance. Correspondingly, this depends on the location of light irradiation, which can improve the body’s ability to heal wounds, reduce inflammation and pain, and even regenerate hair.

Mitochondria are present in almost every cell type. But they are particularly rich in the retina, which is a thin layer of the eye that can capture light from the outside world and convert it into information before sending it to the brain. Without the retina, we simply cannot see it. But as we age, the mitochondria of the retina begin to break down at a faster rate than mitochondria elsewhere. This dysfunction is thought Plays a key role in the decline of age-related vision and other degenerative eye diseases.

Author of this new study Published In the Journals of Gerontology, mice, bees, and flies were tested earlier, and it was found that red lights can improve the performance of these three retinas.

In this trial, they recruited 24 people between the ages of 28 and 72, all of whom had no eye problems. In two weeks, volunteers were told to stare at the red light “torch” for three minutes a day. The manufacturer of this equipment spent about $15. 670 nm wavelength). Before and after the experiment, they took the testThey can see in the dark Retina stick test, And how they see the contrast between colors, for example Retinal cone test.

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Examples of hand-held LED flashlights used in the study. Examples of hand-held LED flashlights used in the study.
photo: University College London

In people under 40 years of age, the average performance before and after treatment remains unchanged. But for people over the age of 40, they performed better in both tests after treatment. Although people usually do better on color contrast tests, the improvements in both tests are statistically significant.

The lead author said: “Our research shows that simple and brief exposure to light wavelengths can recharge the debilitating energy system of retinal cells, just like recharging the battery, which can significantly improve the debilitating vision of the elderly.” University of London College eye researcher Glen Jeffery in a statement Published By the university.

The results are of course fascinating, but more research is needed, involving many people, to know whether this therapy is really effective. Although red light therapy is unlikely to be dangerous (also known as low-light therapy because the heat it produces does not harm cells), its actual record in many potential health applications is still Largely anecdotal and unproven.

This does not mean that these results are invalid, nor does it mean that one day we will not recommend that elderly people who are concerned about vision take red light every day. This just means that we should be careful and wait for further evidence to appear, and then all of us start staring at the red flashlight.


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