Description
4sold focuses on a wide variety of functional lenses for night vision goggles, eyeglasses, cycling, sunglasses to protect against harmful rays from computer screens, to polarized UV protection sunglasses 400. We strive to provide quality products at reasonable prices.
Where can we find blue light?
TVs, mobile phones and computer monitors emit blue light. Blue light lie in the sun’s rays and the LED lights. Blue light is ubiquitous in digital products.
How can blue light affect your eyes?
In a study of 400-500 nm light spectrum quality, a large number of high-energy short-wave blue light is continuously produced, such as a sharp blade, it damages your lenses and goes directly in the macular region. The symptoms are: you can not open your eyes, you cry spontaneously and very painfully. Damaged or tired eyes have a very bad impact on our work but also our daily life.
Computer glasses
4sold tinted amber lenses have a panoramic view for high resolution. The blue lens coating is anti-glare, designed to filter the high-energy part of the spectrum, allowing you to stay focused more efficiently throughout the day.