Hyperopia, also known as farsightedness, is a vision defect caused by the eyeball being too short or the cornea having an imperfect curve, making it difficult to focus on near objects. It can be caused by sinus infections, injuries, migraines, aging, or genetics. While mild cases may be treated with natural supplements, a cure is unlikely for severe hyperopia, though herbs and supplements can help. Over 12 million Americans aged 40 and older have hyperopia.