The study has been published in The Journals of Gerontology, entitled, “mitochondrial function” optically improved redeems the decline visual of the older person”. The lead author professor Glen Jeffery (UCL Institute of Ophthalmology) has shown that the visual system of people drops significantly once on 40 in the form of cells in the eye. the retina begins to grow older. The density mitochondira of the cells, which stimulates the cellular function and requires a high energy, decreases, resulting in a decrease of the function of the photoreceptors.
Researchers relied on their past discoveries in mice, bumble bees, and fruit flies, which have all found significant improvements in the function of retinal photoreceptors when their eyes were exposed to a light to deep red at a wavelength of 670 nm. .
“The mitochondria have a characteristic absorbance of light specific that influence their performance: the longer wavelengths of 650 to 1,000 nm are absorbed and improve the performance of the mitochondria to increase energy production “, says professor Jeffery.
The study recruited 24 participants (12 men, 12 women) between 28 and 72 years of age, without ocular disease, to participate. All participants were tested for the sensitivity of their rods and cones at the beginning of the study. The sensitivity of the rod allows people to see in the dark while the sensitivity of the cones help distinguish between colors with low contrast.
All participants were then given a small LED torch to take home with them and were invited to look in the beam of light deep red of 670 nm for three minutes daily for two weeks. They were then re-tested for their sensitivity of rod and cone
The result shows that the light at 670 nm had no impact on younger individuals, but in the 40 years and older, significant improvements have been obtained. For the color detection, the sensitivity has improved up to 20% in some elderly people around the age of 40 and more. The improvements were larger in the blue part of the color spectrum that is more vulnerable to aging. The sensitivity of the stem (the ability to see in low light) was also significantly improved in older people around the age of 40 and more, although less than the color contrast.
On the basis of the results of the study, professor Jeffery noted that “it is possible to significantly improve the vision that is decreased in the elderly using simple exhibits short wavelengths of light that recharge the energy system, which declined in the cells of the retina, rather like re-charging a battery. ”
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