What is Blue Light? Blue light is part of natural visible light, and both sunlight and electronic screens emit blue light. Blue light is an important part of visible light. Blue light has high frequency and short wavelengths similar to UV light. They can penetrate the lens directly to the macular area of the eye, causing macular degeneration. Prolong exposure to blue light has been shown to damage the retina, the part of the eye that detects qualities such as color and light intensity. As your eyes are working extra hard to cope with the blue light, you begin to experience eye strain Headache insomnia. How Blue Light Influence Our Daily Life Frequent Headache Too much blue light exposure can cause eye strain, headaches, and blurred vision, affect your learning and working efficiency. Trouble Sleep Cause poor sleeping quality or even hardly can fall asleep. Permanent Eye Damage Long-term exposure to blue light has been linked to a greater risk for vision loss. Also, influence your health and can't pay attention to work. Bevi Fashion Reading Glasses Blue Light Blocking Blue-ray blocking -- Bevi lenses can absorb 95% of high-energy blue light. UV protection -- Anti-Blu-ray Lenses utilize special U.S. substrate processing technology to protect the eyes from ultraviolet rays. Clear lens -- The lens was made of a fully transparent base, without any pigment, while maintaining high light transmittance. Less reflective, no affect reading, and almost no color difference. Multiple Power- Suits for everybody who is in front of a monitor or sunshine. Bevi Product Features: Strong Hinge Strong hinges help glasses adapt to the face, after many opening and closing tests, the opening and closing are still smooth, not easy to fall off. Ergonomic Design Suitable for all kinds of nose types, you will not feel pressure to wear and more comfortable, the frame will not slip off easily. Blue Light Blocked Blue light blocking glasses have specially crafted lenses that are said to block or filter out the blue light given off from digital screens. Product Dimension, Benefits and How to care your Glasses: Product Benefits: Anti Eye Fatigue Reduce eye strain and sensitivity to light while facing digital screens for a long time. Minimize the Headache Block harmful blue light and let harmless light enter your eyes can minimize your headache. Better Vision Clear glasses for reading with no distortion. The HD lenses have good clarity at the periphery as well. Less reflective and accurate magnification. Better Work You can wear Bevi readers for extending periods of time without eyestrain. Great for office workers or anyone who has to read for a long time. Better Sleep Reduce eye fatigue and headaches by wearing these reading glasses. You deserve a deep sleep after a whole day's work. Product Care: Never clean your reading glasses with paper towels or clothing, which can leave scrathes.