By now, it’s almost unimaginable that anyone using digital devices hasn’t come across warnings about the risks posed by blue light.
And with those cautions, the recommendation that’s almost as common? Blue light glasses.
These glasses feature lenses designed to shield your eyes from the higher-energy, shorter wavelengths of light.
Given how prevalent screens are in our lives—seriously, they’re everywhere—it seems like we need to find ways to manage their impact rather than wish them away. This brings up a crucial question: is there any real benefit to wearing blue light blocking glasses, or are they just another marketing ploy?
LED blue light
Most likely, you’ve encountered the claims already. It’s said that blue light from screens and even indoor LED lights can lead to various health issues, like disrupted sleep patterns and other sleep-related difficulties. It’s often suggested that this light signals our bodies to stay alert. That’s an obvious concern when you’re scrolling through your phone at night.
It’s also said to elevate stress levels and hinder cognitive performance, though, curiously enough, some studies indicate the opposite—might not be as detrimental as we think.
Let’s not forget, blue light isn’t inherently bad. It’s a natural part of sunlight, emitted at a higher level than what we get from screens or LEDs. Yet many people are still reaching for those blue light glasses in hopes of alleviating eye strain and fatigue.
Those who spend long hours in front of screens often share experiences of discomfort, commonly described as computer vision syndrome.
These special glasses aim to filter out those more intense wavelengths of light, specifically blue light.
The ambiguity in science
Yet, the evidence surrounding blue light glasses and their effectiveness is still quite uncertain, with many experts leaning toward the idea that they may not be essential after all.
A survey conducted in 2023 analyzed various trials on blue light blocking lenses and concluded that these glasses showed minimal influence on sleep quality or associated symptoms such as eye strain.
So, does this mean you should skip buying blue light glasses? Well, that leads to another question: what can we do to lessen blue light’s negative effects anyway?
20-20-20 vision
The good news is, there are strategies available that don’t rely on new glasses. Eye care professionals often suggest steering clear of screens at night or activating your device’s “night mode” to warm up the display and cut down on blue light exposure—essentially an alternative to lenses altogether.
“It’s plausible that blue light exposure signals your brain to stay awake, so minimizing this light in the evenings could indeed help, and perhaps glasses could assist as well,” noted Dr. Craig See, an ophthalmologist. “However, many devices allow you to automatically reduce blue light levels.”
Some people also advocate for the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds. It’s a nice way to reduce eye strain without needing extra gear.
