foundation of nursing practice questions Related

Review foundation of nursing practice questions related questions and content

The patient asks the nurse what these numbers specifically mean. What is a correct response by the nurse?

  • A. A person whose vision is 20/40 can see an object from 40 feet away that a person with 20/20 vision can see from 20 feet away.
  • B. A person whose vision is 20/40 can see an object from 20 feet away that a person with 20/20 vision can see from 40 feet away.
  • C. A person whose vision is 20/40 can see an object from 40 inches away that a person with 20/20 vision can see from 20 inches away.
  • D. A person whose vision is 20/40 can see an object from 20 inches away that a person with 20/20 vision can see from 40 inches away.
Correct Answer: A

Rationale: A person whose vision is measured at 20/40 can see an object from 40 feet away that a person with 20/20 vision can see from 20 feet away. In this measurement system, the first number represents how far away the person is from the eye chart (the testing distance), and the second number indicates how far away a person with normal vision can be from the chart to see the same line of letters or objects. Therefore, if someone has 20/40 vision, it means they need to be at 20 feet to see what a person with 20/20 vision can see at 40 feet.