This is called presbyopia, and it affects adults starting around the age of 40 years.

这个叫做老花眼（远视眼）从40岁开始影响成年人。

Meanwhile, 28% regularly squint at the screen – all of which are tell-tale signs of presbyopia.

与此同时，228%的受访者经常斜视屏幕——以上表现都是老花眼的明显特征。

We call this condition presbyopia, and it affects two billion people worldwide.

我们称这种情况为老花眼，它影响着全世界 20 亿人。

I'll get started by describing the loss in refocusing ability leading up to presbyopia.

我将从描述导致老花眼的重新聚焦能力的丧失开始。

As we age, people often get presbyopia: our lens becomes less elastic, unable to squish enough to bring the closest objects into focus.

我们年老后常常会得老花眼，因为晶状体弹性减弱，无法挤压到能看近物的程度。

Right now some of you are probably thinking, that sounds bad but he means you in a figurative sense, only for the people that actually end up with presbyopia.

现在你们中的一些人可能在想，这听起来很糟糕， 但他指的是比喻意义上的你， 只适用于最终患上老花眼的人。

I want to remind you that presbyopia has been with us for all of human history and we've done a lot of different things to try and fix it.

我想提醒您，老花眼在人类历史上一直伴随着我们，我们已经做了很多不同的事情来尝试修复它。

Even though presbyopia seems like it would make survival way harder, bonobos are really socially collaborative, and it’s possible that they take care of their elders when their eyesight starts to go.

尽管老花眼似乎会让生存变得更加困难，但倭黑猩猩确实具有社会合作精神，当他们的视力开始下降时， 他们可能会照顾他们。