The principle of prescription for farsightedness is to take the lens with the best vision and the highest prescription, for example, if you can see 1.0 with both +3.00D and +3.50D, take +3.5D lens. If the farsightedness is mild, there is no vision loss, no symptoms of visual fatigue, you can not wear glasses. If the hyperopia is combined with internal strabismus, only foot correction is available to help reduce or eliminate the strabismus. If the hyperopia is combined with exotropia, the best vision and the lowest degree of hyperopia lenses will be taken. Some people start to wear glasses, if the degree obtained is relatively high, the patient does not adapt, can be appropriate to reduce the degree of farsightedness lens.