Your screen time on your devices like computers, smartphones, and television, exposes your eyes to risks of blue light. Nonetheless, science still has to prove that blue light causes damage to the eyes.
Normally, after hours of staring at your devices, it puts a strain in your eyes which causes eye discomfort. This is what we call digital eye strain. This roots from decreased blinking of the eyes when focusing on the screen. This dries the eye and makes it feel more tired.
What Are the Risks of Blue Light?
Blue light can affect your natural body clock. The light emitted by our digital screens keeps the body alert and awake, which is why excessive blue light at night makes it harder to sleep. If you encounter problems sleeping, try to decrease your screen time before going to bed and set your screen to a warmer light. You can adjust your device settings to lessen the emission of blue light from your screen.
It is scientifically proven that too much ultraviolet light exposure from the sun increases risks for eye diseases. However, the risks for diseases caused by excessive blue light exposure still requires further investigation. But, the best thing to do right now is to take preventive measures against blue light despite the lack of evidence regarding its harmful effects.
How to Prevent Eye Strain From Blue Light
To avoid eye strain from blue light, take breaks, and follow the “20-20-20” rule. This means that every 20 minutes, you should look away to an object at least 20 feet away from you for at least 20 seconds. For dry eyes, use artificial tears for extra moisturization.
Beware of eyewear that claims to protect your eyes from blue light. They are not yet proven to be effective as stated by the American Academy of Ophthalmology. The current evidence cannot prove the ability of blue-light-blocking lenses to protect the retina. False advertisements are facing due fines and punishments for misleading claims about the power of blue-light-blocking lenses.
There is not enough evidence yet that blue light from electronic devices can increase the risk of macular degeneration specifically or directly harm your visual acuity. Nonetheless, everything in excess is harmful. Overuse of digital devices may disrupt sleep and further deteriorate your overall health affecting your eyes. If you experience any persistent disturbances with sleep or are facing other discomforts with blue light exposure from your devices, talk to your doctor immediately.