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) Presbyopia: Presbyopia is an age-related condition where the lens of the eye loses elasticity, making it harder to focus on close objects. This condition typically begins to affect individuals around the age of 40, causing them to hold reading materials farther away to see them clearly. The client's complaint aligns perfectly with this common symptom of presbyopia.

B) Cataracts: Cataracts involve the clouding of the eye's lens, leading to overall blurry vision, glare, and difficulty with night vision. Although cataracts can interfere with reading, they do not specifically cause the need to hold reading materials farther away, which is more indicative of presbyopia.

C) Tropia: Tropia is a type of strabismus where one eye deviates from normal alignment, leading to symptoms like double vision or eye strain. This condition affects how the eyes coordinate but does not typically cause the specific symptom of needing to hold reading materials farther away.

D) Myopia: Myopia, or nearsightedness, results in clear vision for close objects but blurry vision for distant objects. The client's issue of needing to hold reading materials farther away to see clearly is inconsistent with myopia, which would cause difficulty with distant vision instead.

A. Snellen chart B. Penlight C. Magazine D. Ophthalmoscope

Correct Answer is C

Explanation

A) Snellen chart:

The Snellen chart is used to assess distance vision, not near vision. It consists of letters or symbols arranged in rows, with the client typically asked to read from a specific distance to test visual acuity.

B) Penlight:

A penlight is primarily used to assess pupillary reactions and near vision tasks such as accommodation. It helps examine how the pupils respond to light and how well the eyes focus on near objects.

C) Magazine:

A magazine or similar reading material is commonly used to assess near vision. Clients are asked to read the text at a comfortable distance, evaluating their ability to focus on close-up objects and the clarity of their vision.

D) Ophthalmoscope:

An ophthalmoscope is used to examine the interior structures of the eye, such as the retina and optic nerve head. It is not used for assessing near vision but rather for diagnosing conditions affecting the eye's internal structures.

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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

Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

The nurse is preparing to assess a client's near vision. The nurse would use which piece of equipment for the assessment?

Correct Answer is C

Explanation

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