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What is Blue Light and Does it Harm Our Eyes?

Blue Light Filter

Blue light is the color of the light spectrum that is visible to the human eye. Not all wavelengths of blue light are harmful to the body. Our bodies need some blue light to regulate our circadian rhythm and to elevate our mood and overall well-being. The largest source of blue light is the sun, so wearing sunglasses while outdoors is very important, especially for children.

The effects of high energy visible, HEV, blue light are now being researched more in depth due to how much exposure we receive from digital devices that emit artificial blue light. Consistent exposure to this light without protection can cause cataracts and changes in the macula, possibly leading to macular degeneration. Studies also show that too much exposure to blue light can also cause eyestrain, fatigue, headaches and the disruption of the body’s natural sleep cycle.

At Performance Eyecare, we work hard to utilize the latest in technology to provide our patients the best vision and to prevent vision loss over the years. If you or your children are exposed to significant amounts of blue light, we recommend a blue light filtering feature for your eyeglass lenses. Our blue filter lens material is virtually clear, not tinted yellow! If you opt for a blue light anti-glare you will notice a blue shimmer, which is indicative of the blue light bouncing off the lenses. Blue light material can be combined with the blue light anti-glare for additional blue light protection. We also recommend polarized lenses for sunglasses and Transitions for clear lenses when requested, which block additional high energy blue light.