Eyesight

Is your eyesight as bad as your cell phone reception? Because that was a terrible call.
The Stuttering Tortoise
The Stuttering Tortoise A long time ago, when animals ruled the lands, a band of tortoises made its slow way from their old home, now turned too cold for them, to a new one down south. Every night they went to sleep and left a guard to call if a predator shows up. Everything went fine until the third night, when Elvi the stuttering tortoise was put on guard duty. In the middle of the night, he saw a fox, and he started calling out: "Ff...fff...ffff...." but before he could finish the warning, a fox came and snatched one of the tortoises away. The rest of the tortoises were very angry with Elvi, and so they made him watch again the next night, warning him he better not repeat his mistake. In the middle of the night, Elvi starts saying "W...wwww.wwwwwoo..." but before he could finish, a wolf comes and snatches another tortoise away. Now the tortoises are livid. They tell poor Elvi that if this happens again, they will kill him themselves! So the third night comes, and Elvi sees another fox, and so he calls out: "Ff... ffff... fooooxxxxxxxxxx!!!!!!" He screams it so loud everyone wakes and they fight the fox away. As a big thank you to Elvi and his keen eyesight, they gathered around him with praise. He is so happy, he says: "Hip Hip!" "Hooray!" they all cheer. "Hip Hip!" "Hooray!!" "Hip Hip!" "Hooray, hooray hooray!!!" And then a herd of hippos ran over them.
How do you know that carrots are good for your eyesight? Have you ever seen a rabbit wearing glasses?