Farsightedness, or hyperopia, is the condition in which distant objects are seen clearly, but nearby objects appear blurry. It occurs when the eyeball is shorter than normal (see Figure below ). This causes images to be focused in a spot that would fall behind the retina (if light could pass through the retina). Hyperopia can be corrected with convex lenses. The lenses focus images farther forward in the eye, so they fall on the retina instead of behind it.
Mark found himself sitting closer to his TV and computer screens than he used to. His wife Beth however seemed to be having the opposite problem. She was holding her books and even menus at arms length just to read.
Who can see close things normally?