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How close is the smartphone or laptop you’re reading this on from your eyes? Probably just a few inches. How long have you spent looking at a screen today? If you’re close to the average it’s likely to be over nine hours.
New research from ophthalmologists shows that our constant screen time is radically changing our eyes. Just like the rest of our bodies, the human eye is supposed to stop growing after our teens. Now it keeps growing.
When our eyes spend more time focusing on near objects, like phones, screens or even paperbacks, it makes our eyeballs elongate, which prevents the eye from bending light the way it should. This elongation increases nearsightedness, called myopia, which causes distant objects to appear blurred. Myopia affects half of young adults in the US, twice as many as 50 years ago and over 40% of the population.
... Working for prolonged periods, whether texting, reading or jotting emails is what optometrists call “near work”. The trouble with holding a screen close to your face isn’t about light shining into your eyes, it’s about the strain of the eye. For one, your eyes blink far less when they’re focused so closely. As you’re holding your phone in your hand, performing near work, your muscles stretch and your lenses shift since our eyes over-accommodate to constant close-distance tasks. That’s why they’re growing.
When you put on a pair of glasses, your eye muscles relax because they’re no longer straining. Ditto if you put down your phone – sans glasses – blink a couple times and stare off into the distance for 20 seconds.
Does this affect you? Probably. How much extra time on screen have you had in the past 18 months? How much work have you been doing from home? Pre-pandemic, our phones were already constant companions. When many of us began working from home and e-learning last year, researchers predicted this dramatic online increase would cause never-before-seen eye dysfunction. They were right. .. Go read it, dude!

What can I do?

Spend time outdoors
Follow 20-20-20 rule (See my post Ease your digital eye strain with the 20-20-20 rule.)