How to keep screens from ruining your vision
Laboratory studies have shown that prolonged exposure to high-intensity blue light damages retinal (视网膜的) cells in mice. But epidemiological (流行病学的) studies on real people tell a different story.
So, Human eyes are different from rodent (啮齿动物) eyes. We have protective elements, such as macular pigments and the natural blue-blocking ability of the crystalline lens (晶状体). Just because blue light isn't harming your retina doesn't mean your electronic devices are harmless. Because of its wavelength, blue light does disrupt healthy sleep physiology. Mounting evidence suggests thatIt also robs you of restorative rapid-eye-movement sleep, dulls focus, and diminishes brain activity the next day.
First, turn off your electronic devices before bed. Outside of the bedroom, when you do look at your screens, lower the brightness. Second, follow the "20-20-20" rule. The American Optometric Association defines this rule as taking a 20-second break every 20 minutes to look at something 20 feet in the distance. This will allow your eyes to blink and relax. Third, This way will reinforce the body's natural tears and keep the eye's surface hydrated.
A. why does it damage our human retinal cells?
B. These structures absorb blue light before it reaches the delicate retina.
C. why is there difference between blue light's effects on rodent eyes and human eyes?
D. screen time before bed increases the time it takes to fall asleep.
E. There are ways to make your screen viewing more comfortable and more conducive to sleep.
F. use lubricating eye drops before extended computer use.
G. we should decrease screen time before bed.
