ummm... when everything starts going blurry. But it helps to do eye checks here and there, coz you never know. I have glasses ( And i am NOT a nerd) and I'm short sighted. Everything just goes blurry that's how you tell.
The unsigned answerer
In most patients, treatment can prevent further vision loss. So if you get proper treatment you may very well not suffer further loss of vision. Without treatment, you will go blind.
It's not. You don't get bad eyesight from reading - you get it because of genetics!
my eyesight is very bad
Looking just in front of them is blurry, even with big eyes they have bad eyesight
yes it did
By reading in the dark.
no but bad for your eyesight. that what happened to my friend instead she was on her i touch all day she has negative eyesight for both eyes
Werewolves do not exist. But the mythical werewolf is supposed to have good eyesight, considering they come out at night.
It means that your eyesight is bad
He has bad eyesight.
baDMINGTON
Things like bats and moles.
yes it's genitic