People suffering from hyperopia (also known as hypermetropia) have a good long distance vision, but may have problems in reading distance. The hypermetropic eye is quite shorter and focuses the objects behind the retina, which makes short vision more difficult, but accomplishes an excellent far distance vision. Thanks to the accommodation of the lens, children and young people can read without reading glasses, but with effort.
This visual discomfort may cause rejection to reading and also school failure. Even though mild hyperopia is not a risk factor, the increase of positive dioptres (high hyperopia) is the main cause of strabismus in children and is an important factor for the angle closure glaucoma.