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Blue light is one of the many lights in the light spectrum, with high energy levels and a short wavelength. A range of light sources emits different levels of blue light, the sun being the largest. However, in recent times, blue light has become infamous because of its association with digital screens, such as computers, smartphones, tablets and televisions, and has raised concerns about its long-term effects on the health of the eyes.
Blue light can easily penetrate your eyes, owing to its short wavelength. This implies that most visible blue light rays can pass through the cornea, lens and then to the retina. Many experts believe that too much exposure to blue light can potentially damage the light-sensitive cells available in the retina.
Yes, blue light blocking glasses play an effective role in limiting the amount of blue light that can enter the eyes. However, there has been no concrete evidence that they can negate the harmful effects on the eyes from exposure to blue light.
No, you don’t need a prescription for blue light filter glasses. They’re available in both non-prescription and prescription lenses to be used by anyone who wants to minimise digital eye strain.
Blue light filter glasses can help reduce digital eye strain and improve visual comfort. Therefore, they are a worthy investment for people who use screens for long hours every day.