Most of us have experienced eye strain after long hours of scrolling on our phones or staring at a laptop screen. Enter blue-light glasses, a trendy solution that claims to alleviate this discomfort. However, recent research suggests that these glasses may not actually prevent or relieve eye strain.
Blue light refers to a range of wavelengths emitted by the sun and screens, including our phones and laptops. Some experts have theorized that blue light could be the culprit behind “computer vision syndrome” – a condition characterized by eye irritation, headaches, and blurred vision after prolonged screen time.
A new review of 17 studies reveals that using blue-light-filtering glasses does not offer any significant benefits compared to standard lenses in reducing eye strain. The studies included in the review were relatively small, casting doubt on the efficacy of blue-light glasses in curbing eye strain.
While some studies demonstrate that blue-light-filtering glasses may improve sleep, others show the opposite effect. Blue light inhibits our brain’s production of melatonin, a hormone necessary for sleep regulation. Therefore, blocking blue light may have a limited impact on sleep quality.
It is important to note that the amount of blue light emitted by phones and computers is relatively low. However, spending lengthy periods in front of screens can still lead to eye discomfort due to the way we use our eyes, especially when viewing screens up close.
Instead of relying solely on blue-light glasses, experts suggest implementing a few other strategies to reduce eye strain:
1. Lubricate your eyes: Use eye drops at regular intervals to combat dryness caused by reduced blinking.
2. Take breaks: Employ the “20-20-20” rule – every 20 minutes, look at something 20 feet away for 20 seconds. This helps relax the eye muscles.
3. Minimize glare: Position your computer to avoid reflections from light sources and reflective surfaces like windows and glass doors.
4. Adjust screen placement: Keep the center of your screen just below eye level, and if needed, increase the distance between yourself and the screen.
5. Hold your phone at a distance: Holding your phone too close to your face can strain your eyes. Aim for a distance of at least 16 inches.
If these self-care practices do not alleviate eye strain after a few weeks, it is advisable to consult an eye specialist for further assistance.
Frequently Asked Questions (FAQ):
1. Do blue-light glasses really work?
While blue-light glasses have gained popularity, recent research suggests that they may not effectively prevent or relieve eye strain. Their efficacy remains uncertain.
2. What is blue light?
Blue light refers to a range of wavelengths emitted by the sun and screens. It has been a subject of debate regarding its potential impact on eye health and sleep.
3. Can blue light affect sleep?
Yes, exposure to blue light can disrupt sleep by inhibiting the secretion of melatonin, a hormone that helps regulate sleep patterns.
Sources:
– [American Academy of Ophthalmology](academyofophthalmology.org)