If you’re a four-eyes like me, you may have heard that wearing eyeglasses will ruin your eyesight.
在过去的时间里 普遍的想法是 眼睛里那些伸展你眼睛中的晶状体的肌肉没有
Over time, the thinking goes, the eye muscles that stretch the lens of your eye aren’t
worked out as much, so they get weaker, and you keep needing stronger and stronger prescriptions
to see clearly.
The idea that glasses hurt your vision is a super myth.
Because that’s not how glasses work.
Most vision problems occur because the eyeball is either too long or too short, causing the
cornea and lens to bend, or refract the light either too far in front or behind the retina,
giving you blurry vision.
如果你的眼球前后径过长 而且光线聚焦到了你视网膜的前方 你就近视了
If your eyeball is too long, and light is focused in front of your retina, you’re nearsighted,
or myopic, and you can see things up close but struggle with things in the distance.
If it’s too short, and light is focused behind the retina, you’re farsighted, and
you can read that sign halfway down the street, but have trouble reading what’s right in
front of you.
Your eye muscles can bend the lens more or less to try and focus light onto the right place.
But those muscles can only contract or relax so much to accommodate squat or oblong eyes.
So, weak eye muscles aren’t why you have bad eyesight.
If that were the case, we’d all be doing eye exercises to cure our poor vision.
Glasses simply do what properly shaped eyeballs do, which is to make it possible to focus
the light that’s coming into your eye directly onto the retina, allowing you to see crisp images.
The only effect they may have on your eye muscles is reducing excessive strain on them.
There was a time, though, when doctors thought eyeglasses could do more.
For decades, optometrists purposely prescribed glasses for nearsighted kids that didn’t
fully correct their vision, because they thought it would keep their eyesight from getting worse.
这是因为 对于儿童来说 眼睛还在发育而且通常比
That’s because, in children, the eye is still growing, and usually gets longer as
it grows in the skull.
In kids who are nearsighted, this could make myopia worse.
And doctors thought that fully restoring distance vision could make kids’ eyes grow even longer,
as they tried to compensate to see things up close through corrective lenses.
So doctors under-prescribed, thinking that would keep the eyes from elongating as much.
But in 2002, a clinical trial called that into question.
After two years, kids who were given weaker lenses actually ended up with worse vision.
The results were so striking that the researchers had to stop the study early due to ethical concerns.
Subsequent studies haven’t always found such a strong negative effect of subpar glasses,
but there’s no evidence that undercorrection helps, and optometrists have largely stopped
So glasses won’t ruin your vision — if anything, they may prevent it from getting worse.
And, yeah, you might need stronger prescriptions as time goes by.
因为 随着你年龄的增长你眼睛的晶状体变得更硬 使它们改变焦距
Because, as you age, the lenses of your eyes get stiffer, making it harder for them to
But it’s not your glasses’ fault.
So, keep wearing them.
Because they help you see stuff.
And also just look cool!
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of corrective lenses among them.
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