The diagram below shows how light is focused in an eye with uncorrected hyperopia (long-sightedness) compared to an eye with a corrective convex lens.

An ophthalmic clinic screened 640 elderly patients for hyperopia.

62.5% of these patients had normal near vision and did not require corrective convex lenses.

The rest of the patients had hyperopia and needed corrective convex lenses to focus light correctly on their retinas.