The 6 things you need to know about blue light
Have you ever wondered what blue light is and how you can protect yourself from its harmful effects? Here are six proven facts you should know about blue light.
1. It's everywhere! In fact, sunlight is the primary natural source of blue light. However, artificial LED lighting used for indoor lighting and electronic device screens are alarmingly increasing our exposure to this type of high-energy light.
2. Reduces melatonin levels: Overexposure to blue light decreases the levels of melatonin produced by our bodies. Melatonin is an essential hormone that helps us fall asleep and rest well during the night so that our bodies can repair themselves.
3. The eyes cannot naturally block blue light: The eye is better equipped to prevent harmful ultraviolet rays from reaching the retina than blue light rays. It is really important to wear blue light blocking glasses that block the waves of this type of light emitted by screens, to prevent the damage they can cause to the eyes.
4. Main cause of eye strain: The main source of eye strain is blue light. Blue light from natural sources is more easily dispersed than blue light from artificial sources. The longer you look at an electronic device, the more the contrast on the screen decreases, requiring more visual effort, which causes digital eye strain.
5. Increased risk of eye diseases: Overexposure to blue light can cause serious problems, such as macular degeneration, which can lead to permanent vision loss. In the short term, symptoms of overexposure to blue light can include headaches, blurred vision, sensitivity to light, puffy eyes, and even eye pain.
6. Not all blue light is bad. It is important to remember that what is harmful is overexposure to artificial blue light. Sunlight is healthy for us and helps our brains know when it is time to start winding down and producing melatonin. In fact, light therapy is commonly used to treat seasonal affective disorder, which helps people increase serotonin.
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