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 was in a hurry when he left his house. It had been a hectic day but he did not want to be late for his date. When he got to the restaurant he realized he had left his glasses at home. Mark had to hold the menu at arms length to make out the print so he could order?
Is Mark's eyeball shorter or longer than normal?