Farsightedness, or hyperopia, as it is medically termed, is a visual condition in which distance objects are usually seen clearly, but close objects do not come into proper focus. Farsightedness occurs if your eyeball is too short or the cornea has too little curvature, so light entering your eye is not focused correctly.
Common signs of farsightedness include difficulty concentrating and maintaing a clear focus on near objects, eye strain, fatigue and/or headaches after close work, aching or burning eyes, irritability or nervousness after sustained concentration. Common vision screenings, often done in schools, are generally ineffective in detecting farsightedness since in mild cases your eyes may be able to compensate without corrective lenses. A comprehensive eye examination by a doctor of optometry will include testing for farsightedness.