Do We Require Blue Light Computer Glasses?

Your mother wasn’t far off when she said, staring at computer screens all day would give you square eyes. Several scientific studies have identified blue light to be as harmful as the sun’s ultraviolet light on our eyes. The American Optometric Association has recognized the overuse of computers causes computer vision syndrome. This groups together numerous eye and vision-related complications linked to extended computer use. Take 30 seconds now to concentrate on your eyes, do they feel sore? We tend to ignore minor discomfort, but as the time spent on a computer increases, the pain in our eyes increases. If

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Blue Light, Depression & Anxiety

A Harvard study identified preliminary results that link blue light to diabetes and possibly obesity. The researchers put ten people on a schedule that gradually shifted the timing of their circadian rhythms similar to what occurs when you look at a screen or mobile phone. The test subject's blood sugar levels increased, placing them into a pre-diabetic state. Their levels of leptin, a hormone that keeps people feeling full after a meal, went down. Here's a link to the Harvard Study: Link Here is why. Nighttime exposure to blue light delays the nocturnal melatonin peak (shifting the circadian rhythm) which

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Blue Light, Obesity & Diabetes

A Harvard study identified preliminary results that link blue light to diabetes and possibly obesity. The researchers put ten people on a schedule that gradually shifted the timing of their circadian rhythms similar to what occurs when you look at a screen or mobile phone. The test subject's blood sugar levels increased, placing them into a pre-diabetic state. Their levels of leptin, a hormone that keeps people feeling full after a meal, went down. Here's a link to the Harvard Study: Link Here is why. Nighttime exposure to blue light delays the nocturnal melatonin peak (shifting the circadian rhythm) which

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Blue Light & The Immune System

While we sleep, our immune systems release sleep-promoting proteins/peptides called cytokines. The body requires specific types of cytokines to increase if you’re feeling stressed, have an infection or inflammation. Cytokines act through receptors and play an essential role in the immune system. They are moderating the balance between humoral immunity (release of antibodies that rapidly respond against toxins) and cell-based immunity (release of cytokines that permanently act against disease-causing virus/bacteria. Cytokines also regulate the maturation, growth, and responsiveness of other cell populations that respond to trauma, sepsis, cancer and reproduction. The production of these infection-fighting antibodies and cells slow down

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Blue Light & Age Macular Degeneration

Research has found that a molecule called Alpha-Tocopherol, which is present in the human body and eyes, is a natural antioxidant which stops effected Photoreceptor cells from dying. As we grow older, our immune system becomes less effective. We produce less of this natural antioxidant, subsequently losing the ability to fight against harmful retinal chemical molecules, caused by retina exposure to Blue Light. A significant contribution to deteriorating eye-sight such as Age-related Macular Degeneration. Statistics produced in 2004 by the Australian Institute of Health & Welfare shows that 444,400 Australians aged 55 and over have vision impairment. 51,500 (12%) of

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What Is Blue Light? The Electromagnetic Spectrum

All light, including blue light, is made up of electromagnetic particles that travel through the air to our body in waves. These waves emit energy and depending on the colour, the strength and range of the light can differ. A shorter wavelength is associated with higher energy levels. The unit of measure for light is nanometres (nm) with 1 nanometre equalling just 1 billionth of a meter. Grouped up these items create the electromagnetic spectrum, but only some of these are visible to us.Electromagnetic Wavelengths- Gamma Rays- X-Rays- Ultraviolet (UV) Rays- Visible Light- HEV Light (High Energy Visible)- Infrared Light-

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Blue Light & The Retina

Photochemically-induced retinal injury is caused by the absorption of light by photoreceptors in the retina. Photoreceptors such as rod cells & cone cells convert light into electrical signals in the eye via the chemical process where Rhodopsin (an extremely light-sensitive receptor protein influential to visual phototransduction) & Blue Light collide. Normally, when light hits Rhodopsin, Rod & Cone cells bleach and becomes ineffectual until they have recovered through a metabolic process (approximately 30 minutes) called Wald’s visual cycle. This visual cycle is the biological process which converts photons, such as electromagnetic radiation (UV light & Blue Light) into electrical signals

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Blue Light Blocking Glasses & Sleep

Before the invention of light bulbs, the human circadian rhythm was entirely in sync with the sun because night time light disruption was minimal. At night, exposure to devices emitting blue light is harmful to sleep and the circadian rhythm (the body's biological clock). Research has proven that Blue Light prevents body temperature from dropping during the night. A slowly decreasing body temperature is a critical process to which the body progresses into the stage of sleep. Blue light keeps the body temperature elevated at day time levels. Studies show that exposure to blue light, even when dim, can suppress

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Blue Light (High-Energy Visible) and Blue Light Blocking Glasses

The eye’s cornea and lens are unable to filter or deflect Blue Light. Photochemically-induced retinal injury is caused by the absorption of light by photoreceptors in the retina. Photoreceptors such as rod cells, cone cells & photosensitive ganglion cells convert light into electrical signals in the eye. Normally, when light hits a photoreceptor, the cell bleaches and becomes ineffectual until it has recovered through a metabolic process called Wald’s visual cycle. This visual cycle is the biological process which converts photons, such as electromagnetic radiation (UV light & Blue Light) into electrical signals in the retina. When the retina is

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