Research results show that just seeing 'red light' once a week in the morning improves eyesight
A study by a research team at
Weeklong improved color contrasts sensitivity after single 670 nm exposures associated with enhanced mitochondrial function | Scientific Reports
https://doi.org/10.1038/s41598-021-02311-1
Morning exposure to deep red light improves declining eyesight | UCL News --UCL – University College London
https://www.ucl.ac.uk/news/2021/nov/morning-exposure-deep-red-light-improves-declining-eyesight
In 2020, the UCL research team announced the results of a study showing that the method of 'watching red light for 3 minutes a day' can restore the eyesight that has deteriorated with age. Due to the simplicity of this method and the fact that devices that emit 'red light' can be manufactured at a very low cost, it was expected that further research would help restore the eyesight of many people.
Research results that 'staring at the red light for only 3 minutes a day' can improve poor eyesight --GIGAZINE
In the above study, it was found that 'red light with a wavelength of 670 nanometers' improves visual acuity by improving the energy-producing ability of mitochondria in the retina. In a new study, 20 subjects were asked to see the red light for 3 minutes between 8:00 and 9:00, and a color vision test was conducted 3 hours and 1 week later in order to confirm the appropriate timing to see the red light. A few months later, we conducted an experiment in which 6 of the above subjects were allowed to see red light for 3 minutes between 12:00 and 13:00 and carry out a color vision test. ..
As a result of the experiment, it was clarified that when the red light was seen in the morning, the color vision improvement effect was on average 17%, and when the red light was seen in the afternoon, the color vision was not improved. 'Light in the wavelength range of 650-900 nanometers improves mitochondrial performance and increases energy production,' said Professor Glenn Jeffrey, who leads the research team. 'And seeing red light in the morning. Is the absolute key to improving vision loss. As we have seen in previous studies of flies, mitochondrial activity patterns change during the day and respond to light in the morning and afternoon. In this study, we were able to confirm that a similar reaction occurs in the human retina. '
Also, in the research in 2020, a red light with an illuminance of 40 mW / cm2 was used, but in this research, a light with an illuminance of 8 mW / cm2 was used. The 40mW / cm2 light used in the previous study is also safe for humans, but UCL said, 'It is an additional benefit that this study found that the illuminance can be further reduced.' He has expressed his hopes for the development of safer vision improvement devices.
Professor Jeffrey is working with the UK-based LED equipment maker Planet Lighting to develop an inexpensive device that illuminates '670 nanometers of red light.' 'This method is simple and safe. The energy supplied by 670 nanometers of light is not as great as the energy supplied by natural environment light. In the near future, it will be cheaper and easier for people to use. I am confident that the device will be available. '
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