What eye function is the nurse preparing to assess when the client is asked to stand 20 feet from a specific chart that is mounted on the examination room wall?
Peripheral vision.
External eye structures.
Distant vision.
Near vision.
The Correct Answer is C
Choice A reason:
Peripheral vision is the ability to see objects and movement outside of the direct line of vision. This type of vision is assessed using different methods, such as confrontation visual field testing, where the examiner moves objects into the patient's side vision from different angles. Standing 20 feet away from a chart would not be the appropriate method to assess peripheral vision.
Choice B reason:
The assessment of external eye structures involves examining the physical appearance and condition of the eyelids, sclera, conjunctiva, and surrounding areas. This is typically done at a close range and does not require the patient to stand at a distance from a chart. The nurse would inspect these structures directly, often with the aid of a penlight for better visibility.
Choice C reason:
Distant vision is the ability to see objects far away, and it is what the nurse is preparing to assess when the client is asked to stand 20 feet from a chart. This distance is standard for the Snellen eye chart, which is used to measure visual acuity. The chart has rows of letters that decrease in size, and the patient is asked to read the smallest line of letters they can see clearly. The Snellen chart is the most common method used by eye doctors to measure visual acuity.
Choice D reason:
Near vision is the ability to see objects that are close to the eyes clearly. It is assessed using different charts, such as the Jaeger eye chart, which contains blocks of text in various type sizes. The patient is asked to read the text at a close range, typically around 14 inches, not 20 feet. Therefore, standing 20 feet away from a chart would not be the method to assess near vision.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice a reason:
Educational Prevention is not a recognized level of prevention in healthcare. While education is a key component in all levels of prevention, it is not a standalone category. Education is typically included in primary prevention as it involves informing the public about health practices to prevent the onset of disease.
Choice b reason:
Tertiary Prevention is the level of prevention that aims to manage and treat an existing disease to prevent further complications or deterioration. In the case of immobile stroke patients, tertiary prevention would involve measures to prevent skin breakdown and other complications associated with immobility and the stroke's long-term effects.
Choice c reason:
Secondary Prevention involves early detection and prompt intervention to prevent the progression of a disease. For stroke patients, secondary prevention might include monitoring for signs of skin breakdown so that early treatment can be initiated. However, the scenario described focuses on managing an existing condition rather than early detection.
Choice d reason:
Primary Prevention aims to prevent the disease or injury before it occurs. This would involve strategies to prevent strokes in the first place, such as controlling high blood pressure or encouraging healthy lifestyle changes. It does not directly relate to the prevention of skin breakdown in patients who have already had a stroke.
Correct Answer is C
Explanation
Choice A Reason:
The facial nerve, or cranial nerve VII, is responsible for the taste sensation in the anterior two-thirds of the tongue, not the posterior third. It carries taste sensations from the front part of the tongue via the chorda tympani branch.
Choice B Reason:
The abducens nerve, or cranial nerve VI, has no role in taste sensation. It is primarily involved in controlling the lateral rectus muscle of the eye, which abducts the eye.
Choice C Reason:
The glossopharyngeal nerve, or cranial nerve IX, provides special sensory innervation for taste to the posterior third of the tongue. This enables the sensation of various tastes like salty, sweet, sour, and bitter in this region.
Choice D Reason:
The hypoglossal nerve, or cranial nerve XII, is responsible for motor control of the tongue muscles but does not provide sensory innervation for taste.
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