Background: 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.

Situation: 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?

Question: Is Mark nearsighted or farsighted?

Situation: 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?

Question: Are images focused in front of or behind Mark's retina?

Situation: 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?

Question: Is Mark's eyeball shorter or longer than normal?

Situation: 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?

Question: Do Mark's glasses have a convex or concave lens?

Situation: Mark found that he often needed to hold a book or menu at arms length to see it. He was beginning to feel silly holding his arms out every time he wanted to read something so he decided to go to the eye doctor and get glasses.

Question: Is Mark nearsighted or farsighted?

Situation: Mark found that he often needed to hold a book or menu at arms length to see it. He was beginning to feel silly holding his arms out every time he wanted to read something so he decided to go to the eye doctor and get glasses.

Question: Is Mark's eye shorter or longer than normal?

Situation: Mark found that he often needed to hold a book or menu at arms length to see it. He was beginning to feel silly holding his arms out every time he wanted to read something so he decided to go to the eye doctor and get glasses.

Question: Are images being focused infront of or behind his retina?

Situation: Mark found that he often needed to hold a book or menu at arms length to see it. He was beginning to feel silly holding his arms out every time he wanted to read something so he decided to go to the eye doctor and get glasses.

Question: Does Mark need concave or convex lenses?

Situation: Mark found that he often needed to hold a book or menu at arms length to see it. He was beginning to feel silly holding his arms out every time he wanted to read something so he decided to go to the eye doctor and get glasses.

Question: Will conves lenses focus images farther back or forward?

Situation: 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.

Question: Was mark nearsighted or farsighted?

Situation: 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.

Question: Who was farsighted?

Situation: 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.

Question: Who's eyeball is shorter than normal?

Situation: 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.

Question: Who's eyes focus images behind the retina?

Situation: 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.

Question: Who could see better with convex lenses?

Situation: 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.

Question: Who could not see better with convex lenses?

Situation: 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.

Question: Whose eyeball is not shorter than normal?

Situation: 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.

Question: Who can see close things normally?

Situation: Mark was having trouble seeing things up close when he was reading. Menu or books even files at the office had to be held as far away as possible so he could read.

Question: Is Marks eyeball shorter or longer than normal?

Situation: Mark was having trouble seeing things up close when he was reading. Menu or books even files at the office had to be held as far away as possible so he could read.

Question: Are images focusing behind or infront of Mark's retina?

Situation: Mark was having trouble seeing things up close when he was reading. Menu or books even files at the office had to be held as far away as possible so he could read.

Question: Will convex or concave lenses help Mark?

Situation: Mark was having trouble seeing things up close when he was reading. Menu or books even files at the office had to be held as far away as possible so he could read.

Question: Will conves lenses focus images further back or forward on his retina?