Final answer:
Hyperopia, or farsightedness, causes difficulty in seeing close objects clearly because images are focused behind the retina. This is usually due to the eyeball being too short or the lens not curved enough, and it is corrected with a converging (convex) lens.
Step-by-step explanation:
A patient with hyperopia has difficulty seeing objects at reading or working level (B). Hyperopia, also known as farsightedness, is a condition where close objects appear blurry, and it is due to the light not focusing directly on the retina but behind it. This can be because the eyeball is too short from front to back or the lens is not curved enough.
In the case of hyperopia, images are focused behind the retina, rather than directly on it, causing difficulty with near vision. To correct this vision problem, converging lenses, such as convex lenses, which curve outward are used to adjust the focal point so that images fall directly on the retina.