We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us
Feather Safety Razor

Download Mobile App




Events

ATTENTION: Due to the COVID-19 PANDEMIC, many events are being rescheduled for a later date, converted into virtual venues, or altogether cancelled. Please check with the event organizer or website prior to planning for any forthcoming event.

Morning Exposure to Red Light Improves Declining Vision

By HospiMedica International staff writers
Posted on 09 Dec 2021
Print article
Image: Study co-author Dr. Pardis Kaynezhad holds a deep red light over her eye to stimulate the mitochondria in her retinal cells. (Photo courtesy of UCL)
Image: Study co-author Dr. Pardis Kaynezhad holds a deep red light over her eye to stimulate the mitochondria in her retinal cells. (Photo courtesy of UCL)
Weekly exposure to deep red light (650–900 nm wavelength), when delivered in the morning, can enhance color vision in the aged human retina, according to a new study.

Researchers at University College London (UCL; United Kingdom) conducted a study on the effects of deep red light in humans, building on previous findings in mice, bumblebees, and fruit flies that showed significant improvements in the function of the retina's photoreceptors when their eyes were exposed to 670 nm deep red light. For the study, 20 participants (34-70 years of age, 13 female) were exposed to three minutes of deep red light between 8am and 9am. Color vision was tested before and after exposure, and again three hours post exposure. Ten participants were also tested one week post exposure.

The results revealed that on average, there was a significant 17% improvement in participant’s color vision following just a single three minute 670 nm exposure, which lasted for a whole week; in some of the older participants there was a 20% improvement, also lasting a week. However, when the test was conducted a in the afternoon--a few months on from the first test to ensure any positive effects had been 'washed out'--zero improvement was seen. The study was published on November 24, 2021, in Scientific Reports.

“Mitochondria have specific sensitivities to long wavelengths, and morning exposure is absolutely key to achieving improvements in declining vision. A simple LED device once a week recharges the energy system that has declined in the retina cells, rather like re-charging a battery,” said senior author Professor Glen Jeffery, PhD, of the UCL Institute of Ophthalmology. “We demonstrate that one single exposure to long wave deep red light in the morning can significantly improve declining vision, which is a major health and wellbeing issue, affecting millions of people globally.”

In humans around 40 years old, cells in the eye's retina begin to age, partly since the mitochondria, whose role is to produce adenosine triphosphate (ATP, a molecule that carries energy within cells), also age. Since mitochondrial density is greatest in the retina's photoreceptor cells, the retina ages more rapidly than other organs. Deep red light exposure partially restores ATP generation ability by reducing nanoscopic interfacial water viscosity around the ATP rota pumps, thus improving their efficiency.

Related Links:
University College London


Print article
IIR Middle East

Channels

Surgical Techniques

view channel
Image: Engineers have developed a process that enables soft robots to grow like plants (Photo courtesy of University of Minnesota)

Soft Robotic System Can Grow Like Plants to Allow Surgical Access to Hard-To-Reach Areas

Soft robotics is an emerging field where robots are made of soft, pliable materials as opposed to rigid ones. Soft growing robots can create new material and “grow” as they move. These machines could be... Read more

Patient Care

view channel
Image: The biomolecular film can be picked up with tweezers and placed onto a wound (Photo courtesy of TUM)

Biomolecular Wound Healing Film Adheres to Sensitive Tissue and Releases Active Ingredients

Conventional bandages may be very effective for treating smaller skin abrasions, but things get more difficult when it comes to soft-tissue injuries such as on the tongue or on sensitive surfaces like... Read more

Health IT

view channel
Image: Using digital data can improve health outcomes (Photo courtesy of Unsplash)

Electronic Health Records May Be Key to Improving Patient Care, Study Finds

When a patient gets transferred from a hospital to a nearby specialist or rehabilitation facility, it is often difficult for personnel at the new facility to access the patient’s electronic health records... Read more

Business

view channel
Image: Differentiated stapling technology for bariatric surgery (Photo courtesy of Standard Bariatrics)

Teleflex Completes Acquisition of Bariatric Stapling Technology Innovator

Teleflex Incorporated (Wayne, PA, USA), a leading global provider of medical technologies, has completed the previously announced acquisition of Standard Bariatrics, Inc. (Cincinnati, OH, USA), which has... Read more
Copyright © 2000-2022 Globetech Media. All rights reserved.