A nurse is performing a complete physical examination on a patient. After examining the patient with the Snellen chart, the nurse documented distance vision in both eyes 20/40. The patient asks the nurse what 20/40 means:

20 represents the distance you are placed from the chart and 40 represents the distance a normal eye read the chart.

20 represents the distance a normal eye can read and 40 represents the distance your eye read the chart.

20 represents the distance you are placed from the chart and 40 represents the distance your eye read the chart.

40 represents the distance you are placed from the chart and 20 represents the distance a normal eye read the chart.

Answer and Explanation

The Correct Answer is A

A. 20 represents the distance you are placed from the chart and 40 represents the distance a normal eye reads the chart:

This is correct. The first number (20) represents the distance in feet the patient is from the Snellen chart. The second number (40) indicates the distance at which a person with normal vision can read the same line. Therefore, 20/40 means that what the patient can read at 20 feet, a person with normal vision can read at 40 feet.

B. 20 represents the distance a normal eye can read and 40 represents the distance your eye reads the chart:

This is incorrect. The first number should represent the distance the patient is from the chart, not the normal eye's reading distance.

C. 20 represents the distance you are placed from the chart and 40 represents the distance your eye reads the chart:

This is incorrect. While the first number is correct (the distance from the chart), the second number should represent the distance a person with normal vision can read the same line, not the patient's distance.

D. 40 represents the distance you are placed from the chart and 20 represents the distance a normal eye reads the chart:

This is incorrect. The standard for visual acuity measurements is that the first number represents the testing distance (usually 20 feet), and the second number represents the distance at which a normal eye can read the line.

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Correct Answer is A

Explanation

A) Assess the nasolacrimal sac: Excessive tearing, or epiphora, can result from an obstruction in the nasolacrimal duct, which drains tears from the eye into the nasal cavity. By assessing the nasolacrimal sac, the nurse can determine if there is any blockage or infection causing the excessive tearing, making this the most appropriate next step.

B) Test pupillary reaction to light: While testing pupillary reaction to light is important in a comprehensive eye exam, it does not directly address the issue of excessive tearing. This test is more focused on evaluating neurological function and overall eye health.

C) Inspect the palpebral conjunctiva: Inspecting the palpebral conjunctiva can help identify inflammation, infection, or foreign bodies that may cause discomfort or tearing. However, it does not specifically address the cause of excessive tearing related to nasolacrimal duct obstruction.

D) Perform the eye positions test: The eye positions test assesses extraocular muscle function and cranial nerve integrity. While it is important for a complete eye examination, it is not directly related to the symptom of excessive tearing, which is more likely due to issues with tear drainage.

A. Concussions in sports and motor vehicle accidents cause the largest number of TBIS in teens. B. Females have twice the risk that males do. C. Falls occur more frequently in the younger population. D. Most firearm incidents are accidental.

Correct Answer is A

Explanation

A) Concussions in sports and motor vehicle accidents cause the largest number of TBIs in teens: Adolescents are particularly susceptible to TBIs due to their frequent involvement in contact sports like football, soccer, and hockey, as well as risky behaviors associated with driving. These activities are leading causes of TBIs in this age group, making education on safety measures and proper use of protective equipment essential in prevention efforts.

B) Females have twice the risk that males do: This statement is incorrect. In reality, males are more likely to sustain TBIs than females, especially in adolescence. The higher risk in males is largely due to their greater participation in high-impact sports and higher likelihood of being involved in motor vehicle accidents.

C) Falls occur more frequently in the younger population: Although falls are a significant cause of TBIs in young children and older adults, they are not the primary cause in adolescents. Teens are more likely to sustain TBIs from sports injuries and car accidents, making these areas more relevant for preventive education.

D) Most firearm incidents are accidental: While firearm-related TBIs can occur, they are not as common in the adolescent population compared to injuries from sports and motor vehicle accidents. Prevention efforts should focus more on the activities that pose the highest risk for this age group.

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A nurse is performing a complete physical examination on a patient. After examining the patient with the Snellen chart, the nurse documented distance vision in both eyes 20/40. The patient asks the nurse what 20/40 means:

Nursing Test Bank

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Explanation

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