Farsightedness is a complex refractive error. Children with mild farsightedness generally do not need treatment, while those with moderate to high farsightedness or farsightedness causing visual fatigue or strabismus need convex lens correction, and adults with farsightedness can be treated with refractive surgery. When the refractive system of the eye is at rest, the focus of the parallel light falls behind the retina, which is called hyperopia. The rapid development period is from birth to 3 years old, when the eye axis is from 16mm to 19.5mm, and the slow development period is from 3 years old to 18 years old, when the eye axis is from 19.5mm to the normal eye axis of 23mm or 24mm. The important condition that needs to be met for parallel light to pass through the refractive system and fall on the retina is the proper eye axis length. Therefore, infants are born with hyperopic eyes, and as the eye gradually develops with age, the eye axis grows to the normal range and becomes orthokeratology. The hyperopia corresponding to the development curve of the eye axis at this time is called physiological hyperopia, which is mild and does not require treatment. The complexity of hyperopia is reflected in the fact that it has various causes and is often accompanied by other diseases, such as amblyopia and strabismus. Children with hyperopia that exceeds the developmental curve of the eye axis in childhood are often accompanied by amblyopia and strabismus, which require dilated eye examinations. Children with internal strabismus or without strabismus should be fitted with glasses of the highest prescription for optimal vision and urged to wear them all the time, otherwise the progression of strabismus and amblyopia will increase. If adult hyperopia causes visual fatigue and affects life, optometry is preferred. If you really don’t want to wear glasses, you can be treated by refractive surgery such as laser correction, keratomileusis, crystal-based refractive surgery, radial keratotomy, etc. In summary, children with mild hyperopia generally do not need treatment, while those with moderate to high hyperopia or hyperopia causing visual fatigue and strabismus need to wear convex lenses for correction, and adults with hyperopia can be treated by wearing glasses and refractive surgery.