Which type of lens is typically used to correct hyperopia?

A convex lens is typically used to correct hyperopia, also known as farsightedness. Hyperopia occurs when light entering the eye is focused behind the retina due to the eyeball being too short or the cornea having insufficient curvature. This makes it difficult for individuals with hyperopia to see nearby objects clearly.

When a convex lens is used, it converges light rays before they enter the eye, effectively increasing the eye's focusing power. This enables the light to focus directly on the retina rather than behind it, allowing the individual to see nearby objects more clearly.

Concave lenses, on the other hand, are used to correct myopia (nearsightedness) by diverging light rays, while cylindrical lenses are utilized for astigmatism, which is caused by an irregularly shaped cornea. Flat lenses do not have sufficient curvature to refract light and are not typically associated with vision correction. Hence, convex lenses play a crucial role in addressing the needs of those with hyperopia.