The 670nm wavelength of red light has been documented to be beneficial for mammals at least since the year 2000 but a recent study in The Journals of Gerontology (2) demonstrated that 670nm red light was very beneficial for eye health.

We already know that mitochondrial health begins to decline in humans as we age with up to 70% drop off of cellular energy production over a lifespan.

This means that all systems of the body begin to age and deteriorate at an acceleration rate.

The eyes are the most mitochondrially dense organs in the body, which means they not only require the most energy to function AKA allow us to see, but they are also the most susceptible to a deterioration in function as the mitochondria begin to decline naturally with age.

A lot of talk is also coming to the forefront of the negative effects of all the blue light we are exposed to, by cell phones and other devices, to our skin and on our eyes and how this leads to increased damage to eyes.

Lead author of the study, Professor Glen Jeffery said: “As you age your visual system declines significantly, particularly once over 40.”

In humans around 40 years of age, cells in the eye’s retina begin to age, and the pace of this aging is caused, in part, when the cell’s mitochondria, whose role is to produce energy (known as ATP) and boost cell function, also start to decline.

Researchers built on their previous findings in mice, bumblebees and fruit flies, which all found significant improvements in the function of the retina’s photoreceptors when their eyes were exposed to 670nm red light.

For the study, 24 people (12 male, 12 female), aged between 28 and 72, who had no ocular disease, were recruited. All participants’ eyes were tested for the sensitivity of their rods and cones at the start of the study. 

Researchers found the 670nm light had no impact in younger individuals, but in those around 40 years and over, significant improvements were obtained.

The ability to detect colors (cone sensitivity) improved by up to 20% in some people aged around 40 and over. Improvements were more significant in the blue part of the color spectrum that is more vulnerable in aging.

The ability to see in low light (rod sensitivity) also improved significantly in those aged around 40 and over.

Professor Jeffery said: “Our study shows that it is possible to significantly improve vision that has declined in aged individuals using simple brief exposures to light wavelengths that recharge the energy system that has declined in the retina cells.

“The technology is simple and very safe, using a deep red light of a specific wavelength, that is absorbed by mitochondria in the retina that supply energy for cellular function.”

The BRAND NEW Target Light 670nm from Red Light Rising is the perfect device for improving eye health!

But! Thats not all.

Not only in the 670nm red light great for eye health, other studies have shown it has many other fantastic benefits.

The other benefits found for 670nm red light include –

  • Improvement in brain health and reducing brain deterioration (1)
  • Improved mitochondrial function in eyes (2)                                 
  • Reduction in negative side effects related to diabetes (3) 
  • Repairing damaged brain neurons
  • Increased healing after eye injury
  • Improved energy, mobility, cognition and lifespan.

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References - 
PBM with 670nm may protect the brain from deterioration .
https://pubmed.ncbi.nlm.nih.gov/30625333/

Journal of Gerontology 
https://academic.oup.com/biomedgerontology/article/75/9/e49/5863431

Photobiomodulation Mitigates Diabetes-Induced Retinopathy by Direct and Indirect Mechanisms: Evidence from Intervention Studies in Pigmented Mice
https://pubmed.ncbi.nlm.nih.gov/26426815/

Photobiomodulation Mediates Neuroprotection against Blue Light Induced Retinal Photoreceptor Degeneration
https://pubmed.ncbi.nlm.nih.gov/32235464/
Photobiomodulation directly benefits primary neurons functionally inactivated by toxins: role of cytochrome c oxidase
https://pubmed.ncbi.nlm.nih.gov/15557336/

Light-emitting diode treatment reverses the effect of TTX on cytochrome oxidase in neurons
https://pubmed.ncbi.nlm.nih.gov/11568632/

Optically Improved Mitochondrial Function Redeems Aged Human Visual Decline
https://pubmed.ncbi.nlm.nih.gov/32596723/

670nm light treatment following retinal injury modulates Müller cell gliosis: Evidence from in vivo and in vitro stress models
https://pubmed.ncbi.nlm.nih.gov/29355737/

Differential effects of 670 and 830 nm red near infrared irradiation therapy: a comparative study of optic nerve injury, retinal degeneration, traumatic brain and spinal cord injury
https://pubmed.ncbi.nlm.nih.gov/25105800/

670nm photobiomodulation as a novel protection against retinopathy of prematurity: evidence from oxygen induced retinopathy models
https://pubmed.ncbi.nlm.nih.gov/23951291/

670nm Improves mitochondrial functioning, mobility, cognition and lifespan 
https://pubmed.ncbi.nlm.nih.gov/30007163/
https://pubmed.ncbi.nlm.nih.gov/28917665/
https://pubmed.ncbi.nlm.nih.gov/25788488/