Light rays focus behind the retina, and close objects look blurred.
Indeed, a perfect state of focusing on the retina is unusual, with most people actually being a little hyperopic. A little hyperopia is not a problem because the lens of the eye easily adjusts through altering the focus. However, the greater the hyperopia the harder it is to focus. Close vision may become blurry because the closer the object the more focussing is required. People with hyperopia may suffer from headaches or tired eyes after a lot of close work - even if their vision remains clear.