Farsightedness is the degree of ortho-sphericity after optometry. Children are usually born with a certain amount of hyperopia, which gradually becomes orthophoric as they grow and develop, and some children may even develop myopia. When farsighted eyes look at distant objects, the focal point of the object falls behind the retina due to the presence of farsightedness, and the eye needs to be adjusted to make the focal point fall forward on the retina to ensure a clear image. Farsightedness requires accommodation when looking at distant places, and prolonged gazing at distant places will lead to eye fatigue, especially in people who are getting older. In younger people, fatigue is less common due to stronger regulation. This will be more prominent in the elderly, especially when the elderly look at the near, due to the presence of farsightedness, look at the near need more adjustment, resulting in the near strain and not clear. Farsighted elderly people tend to have earlier and heavier presbyopia. Therefore, people who are farsighted tend to see far and near not very clearly when they get older.