The use of protective eyewear can play an important role in shielding your eyes against the effects of blue light.
Protective Eye Wear for Indoors
For indoors, in low light or at night, protective ophthalmic lenses with a special coating designed to reflect and cut high energy blue light penetration are available. This type of lens coating is referred to as a blue light filter coating. Thanks to blue light filter coatings, the harmful portion of blue light is cut while allowing the good portion of blue light to pass through. You can actually see the protection at work as blue light is being reflected off the lens. Due to the reduced amount of blue light entering the eyes, contrasts are improved by reducing screen brightness, flickering and eye fatigue to provide a strain-free visual experience while providing the most complete protection.
Tinted lenses are another option to help reduce both harsh office lighting and balance colors since they help filter out harmful blue and violet light emitted by many digital devices.
A newly conducted study by École d’Optométrie from the University of Montreal found that:
- Wearing a lens treated with a blue-light filter coating helped reduce symptoms of eyestrain by half during prolonged computer exposure. 2.42 symptoms before versus 1.47 symptoms with blue coating (p=0.04).
- After wearing a lens treated with a blue-light filter coating, subjects with symptoms of eyestrain due to prolonged computer exposure felt a significant improvement of the following symptoms: dry eyes, sticky eyes, and the feeling of grittiness or "sand" in the eye.
- They also reported a trend of the overall vision and improved visual performances in situations of low contrast.
Protective Eye Wear for Outdoors
Sunglasses, which are specially tinted or polarized to absorb the HEV blue rays, are perfect for outdoors during the day.
The best resource is to ask your eye care professional. He or she will be happy to answer all questions and concerns and ensure the maximum UV and blue light protection possible based on your individual needs.
Dr. Marjorie Hogan, a pediatrician who helped write the American Academy of Pediatrics guidelines on kids' screen time. She recommends that parents should ban TVs and computers from their kids' bedrooms. That's, in part, so they can monitor what kids are doing online. But it's also to ensure that screen time is not getting in the way of sleep time.
"Research is showing that screen use at night really disrupts sleep," Dr. Hogan said. "And it is absolutely key that kids, including teenagers, get enough sleep."