What's the problem with Long-sighted People? Why?

-Long-sighted people can not really Focus on Near Objects -Can happen when the Lens aren't in the Correct Shape, which leads to the Wrong enough of Light being Refracted. [Usually less] Can also be that the whole Eyeball is too short -This leads to the Near object being Focused Behind the Retina, which isn't ideal -Glasses, or Contact Lens that is CONVEX can Correct it