Farsighted lenses are convex lenses, often referred to as magnifying lenses. It is important to understand the concept of farsightedness, which is the refraction of light through the eye in a relaxed condition, after the retina is focused. Patients with farsightedness have different degrees and different ages, and show different symptoms of farsightedness. In low-grade hyperopia, both near and far vision appear clearer before the age of 40, but after 40, due to the decline in accommodation, distance vision decreases and near vision becomes unclear, requiring the use of presbyopic glasses, and the symptoms of visual fatigue become more apparent. Patients with high farsightedness will have blurred vision and their vision will be significantly affected. Patients with farsightedness are corrected with convex lenses. Patients with mild hyperopia and no symptoms do not need glasses. If there is significant visual fatigue and strabismus, it is necessary to bring a full prescription of farsighted lenses. Patients with moderate hyperopia or more and middle-aged patients should wear convex lenses to eliminate eye strain.