What does farsightedness mean?

Hyperopia refers to symptoms such as reduced vision and visual fatigue after optical focus is on retina. The etiology is related to factors such as insufficient refractive power of eyeball, insufficient axial length of eye, weakened refractive power of lens, etc. It generally needs to be corrected by convex lens, and can also be treated by laser of surface keratophakia and refractive keratectomy.