I am nearsighted at something like 2 diopters. Without glasses things become a bit blurry, especially in the dark. Here is a sketch I made a few years ago of what I see at night:
This is what I see without glasses
This is a somewhat enlarged version of the blob I see when I look at a remote streetlight in the darkness.
Not all the features of this image may be present at the same time. For example, the small dark spot that looks like a target is something that appears just from time to time, I guess when a minor particle in my eye goes at the exactly correct place.
This image shows how much inferior are our eyes to even the cheapest telescope. My eyes are not so bad as it may look from the picture. With glasses everything is just fine. Or at least looks like it’s fine…
But if this was a telescope, I’d burn the darn thing!
