Over 40s can benefit from red light therapy

Adapted from Shinhmar H et al. J Gerontol A Biol Sci Med Sci 29 Jun 2020

It sounds like a hoax, but staring at a deep red light for three minutes a day has been found by researchers to significantly improve declining eyesight in people aged over 40.

This is the first study of its kind in humans and it was conducted in the UK.

At around the age of 40, human retinal cells start degenerate increasingly rapidly and this causes visual deterioration.

It had already been discovered that retinal photoreceptors in animals improved if they were exposed to 670 nm deep red light.

For the study 24 people aged between 28 and 72 with no retinal disease were recruited. The gender balance was equal. The function of their rods and cones on the retina were tested. Then they were given a special pen torch which emitted the deep red light and they were told to use this for three minutes a day for two weeks.

The light had no effect in the under 40s but after this colour sensitivity improved by up to 20 per cent, particularly in the blue parts of the spectrum, which is particularly affected by ageing. Rod sensitivity also improves. This helps people to see in low levels of light.

Lead author Professor Glen Jeffrey 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, rather like re-charging a battery.”

My comment: I am very shortsighted and as a result of my eye shape I have very poor night vision. If these little torches were made available I would definitely use one.

Resources for diabetics with severe visual loss


This Diabetes in Control article gives some great USA based resources to help diabetics manage their condition even with severe visual loss.
 We Don’t All See the Same. See the World Through My Eyes
The patient lived alone with her Seeing Eye dog and was assisted by her brother. She lived a relatively normal life despite her blindness, working a clerical job and visiting the gym 2 days per week.
As an educator, I had never dealt with a truly sightless individual and was feeling ill-equipped to take on this challenge. The majority of the diabetes patients in our small rural clinic have sight enough to manage their disease. I started to think of all the things we take for granted when teaching our patients, such as lancing their fingers, reading a label, even simply putting the correct amount of food on their plate. All that was thrown out the window. How did I help this patient to see her diabetes care?

I accessed the National Federation of the Blind (https://nfb.org/literature-diabetes) and followed the path to gather information and tools to assist the blind patient who also has diabetes. Most of the resources through the National Federation of the Blind (NFB) are free, although I did purchase a braille edition of exchange lists for the patient in hopes that this would assist her and her brother as they shopped for meals. The NFB also provide an audio CD entitled Bridging the Gap: Living with Blindness and Diabetes. Our patient found this CD to be very helpful and empowering and included resources and articles from the Voice of the Diabetic, an out-of-print publication.

Challenges were many and required more effort on our part to make education visible to the patient. We used many hands-on items for the patient to touch to illustrate diabetes management.

The talking meter was an absolute necessity. Lancing fingers became hit and miss until we worked out a better method for the patient. We did use smart technology for her IPhone with apps that included Dragon Dictation, OMoby, and VizWiz that talked to her and assisted her in identifying items and package information. The app Evernote recorded all of our conversations to review and revisit later. Through the American Diabetes Association, we obtained a compartment plate to assist her with portion control.

Our staff spent a great deal of time making sure that our patient understood all the aspects of her care related to diabetes. Daily phone calls helped the patient to see her diabetes for what it is, a manageable disease.

We spent approximately 3 months working very closely with this patient to support her efforts at self-management.  In the end, her A1C dropped to 6%, 3 months after we began working with her. She was pleased with the outcome, had lost a little weight, and felt, overall, better equipped to manage her diabetes. Our primary goal was to allow the patient to maintain her independence and self-care ability by providing her the tools to manage her diabetes successfully.

Our staff walked away with a very valuable lesson regarding diabetes education and its need to be individualized. It is all about what the patient sees, or in this case, what they don’t see.

Lessons Learned:

  • Explore all resources possible when helping people with diabetes.
  • All patients have challenges, but each challenge is an opportunity to make a difference.
  • Assess each patients’ challenges. You may not feel equipped, but there are usually resources to help if you take the time to look for them.

Liz Whelan MSN RN CDE
Coordinator Health and Diabetes Education


And now… for something completely different:Guide cats for the blind.