What type of lens is used to correct hyperopia?

Convex lenses are used to correct hyperopia, also known as farsightedness. This condition occurs when the eye is shorter than normal or the cornea has inadequate curvature, causing light to focus behind the retina instead of directly on it. Convex lenses are thicker in the center and thinner at the edges. They converge light rays as they enter the eye, effectively moving the focal point forward onto the retina, allowing individuals with hyperopia to see nearby objects more clearly.

While concave lenses are employed for correcting myopia (nearsightedness) and aspheric lenses can improve distortion or provide a more consistent power across the lens, they are not suitable for hyperopia. Flat lenses do not have any refractive power and thus cannot correct any refractive error, including hyperopia. Therefore, convex lenses are indeed the correct choice for addressing this visual condition.