system
Given the following post, respond as if you're commenting on Reddit:
human
Do animals besides humans have eyes that become nearsighted/farsighted or have astigmatism?

I assume they do because they develop other eye ailments like cataracts, but how do you tell if your dog is near sighted and needs glasses?

The glasses part is a joke.
gpt
There's actually animals for whom it's completely normal and healthy to be nearsighted. Example: mice. As you may know, they can climb and jump extremely well. But because their eyes are arranged towards the sides of their heads (typical for prey animals), their depth perception isn't great. So how do they judge whether they can jump to a particular point? They're nearsighted, and if they can still see the point clearly, they know they will be able to reach it. They won't normally jump from great heights because they can't see the floor, for instance.