Skin prickling, itching, burning or flushing sensations on the face or elsewhere Uncomfortable, dry or swollen mucous membranes in the throat, ears or sinuses Muscle and joint pains Heart palpitations Electromagnetic HyperSensitivity EHS Noticing symptoms related to EMF exposure can be a sign that a person is developing a condition known as Electromagnetic Hypersensitivity EHS. EHS is quite common. It is generally thought to be caused by over-exposure to EMR, either a massive single exposure, or more usually a cumulative exposure over a long period. Computer usage is frequently implicated in this process, especially when wireless communications are used.
Donate Blue Light and Your Eyes Current understanding of the effects of blue light from digital device screens on your sight or your child's sight What is Blue Light?
Sunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see. Each of these has a different energy and wavelength. Rays on the red end have longer wavelengths and less energy. On the other end, blue rays have shorter wavelengths and more energy.
Light that looks white can have a large blue component, which can expose the eye to a higher amount of wavelength from the blue end of the spectrum. The largest source of blue light is sunlight. In addition, there are many other sources: Fluorescent light CFL compact fluorescent light bulbs LED light Flat screen LED televisions Computer monitors, smart phones, and tablet screens Blue light exposure you receive from screens is small compared to the amount of exposure from the sun.
And yet, there is concern over the long-term effects of screen exposure because of the close proximity of the screens and the length of time spent looking at them. Blue light is needed for good health: It boosts alertness, helps memory and cognitive function and elevates mood. It regulates circadian rhythm — the body's natural wake and sleep cycle.
Exposure to blue light during daytime hours helps maintain a healthful circadian rhythm.
Too much exposure to blue light late at night through smart phones, tablets, and computers can disturb the wake and sleep cycle, leading to problems sleeping and daytime tiredness. Not enough exposure to sunlight in children could affect the growth and development of the eyes and vision.
Almost all visible blue light passes through the cornea and lens and reaches the retina. This light may affect vision and could prematurely age the eyes.
Early research shows that too much exposure to blue light could lead to: Blue light from computer screens and digital devices can decrease contrast leading to digital eyestrain.
Fatigue, dry eyes, bad lighting, or how you sit in front of the computer can cause eyestrain. Symptoms of eyestrain include sore or irritated eyes and difficulty focusing. Studies suggest that continued exposure to blue light over time could lead to damaged retinal cells. This can cause vision problems like age-related macular degeneration.
If constant exposure to blue light from smart phones, tablets, and computer screens is an issue, there are a few ways to decrease exposure to blue light: Screen filters are available for smart phones, tablets, and computer screens. They decrease the amount of blue light given off from these devices that could reach the retina in our eyes.
Computer glasses with yellow-tinted lenses that block blue light can help ease computer digital eye strain by increasing contrast. Anti-reflective lenses reduce glare and increase contrast and also block blue light from the sun and digital devices.
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If constant exposure to blue light from smart phones, tablets, and computer screens is an issue, there are a few ways to decrease exposure to blue light.
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Jan 13, · Wi-Fi and cellular devices, and their associated electromagnetic fields, are everywhere these days. Even if we want to, we can’t eliminate our exposure to electromagnetic radiation. But, a .