What are they?
Single vision lenses are just that; they help you with a single, particular vision correction need. These lenses have one power across the entire surface. When most people develop vision problems, they need spectacles to help them see faraway objects clearly. They’ve become nearsighted (myopia), and single vision lenses compensate for this condition. Somewhat less common is farsightedness (called hyperopia), where you usually need help to see objects up close. Here, again, single vision lenses can help you to see clearly.