Introduction
Have you ever felt more tired, dry eyes or depressed the more you sleep? The problem may be with the lighting! This article will reveal 5 common "light health traps" and provide scientific solutions to make your home a real "light therapy health center".
Strobe Light: Hidden "eyesight killer"
Many cheap LED lights have invisible strobes (flashes more than 100 times per second), which can cause headaches, eye fatigue and even migraines when used for a long time. Detection method: Aim the camera of your mobile phone at the light. If a rolling black line appears on the screen, it means that there is strobe. Solution: Choose lamps marked "no strobe" or "high-frequency dimming", or install a DC-driven dimmer.
Excessive Blue Light: The "invisible enemy" of Sleep
Electronic screens and cold white LEDs release a lot of blue light (450-480nm), which inhibits the secretion of melatonin and makes it difficult to fall asleep. Recommendation: Choose warm light with a color temperature of ≤3000K for the main light in the bedroom; avoid using mobile phones/computers 2 hours before going to bed, or turn on "night mode"; children's rooms need to strictly control blue light - studies show that children are more sensitive to blue light, which may cause distraction or mood swings.
Unbalanced Brightness: "visual violence" of Space
Lights that are too bright or too dark can hurt the eyes. The recommended brightness of the main light in the living room is 300-500lux (equivalent to a 100W incandescent lamp), the reading area needs to reach 500-750lux, and 300lux is enough for the bedside lamp in the bedroom. To avoid the wrong practice of "one lamp lighting the whole house", a combination of "basic lighting + local lighting" should be adopted - for example, a chandelier in the living room provides overall light, and a floor lamp illuminates the reading corner.
Poor Color Rendering: "distortion trap" of Color
The color rendering index (CRI) measures the ability of light to restore the true color of an object. Low CRI lamps (such as <80) will make food look gray and makeup look off-color, and long-term use may affect color judgment. When purchasing, look for lamps with CRI ≥ 90, which are especially suitable for dressing tables, kitchens and art studios. A little trick: Use a red apple to test the light - if the peel is bright orange-red, it means that the color is excellent.
Wrong Position of Lamps: The Body's "silent protest"
If the bedside lamp is installed directly above the head, the light will directly hit the eyes and cause glare; if the kitchen chandelier is offset from the workbench, shadows will be created when cutting vegetables. Correct principle: The bedside lamp should be 15-30cm lower than the headboard; the dining table chandelier should be 70-85cm away from the table; the desk lamp should be placed on the non-dominant hand side (the right-handed hand should be placed on the left side). Children's rooms should be more cautious - avoid installing lights directly above the crib to prevent strong light from irritating the baby's retina.
Conclusion
Lighting health is not metaphysics, but a scientifically verified wisdom of life. From today on, use a "health-conscious" lamp to protect the physical and mental balance of your whole family - after all, we spend 80% of our time indoors, and light is the most loyal companion here.
