Question 1

The nurse is explaining how the retina works to a patient who is experiencing visual changes. Which factor shared by the nurse is correct?

Accepted Answer

The fovea centralis is indeed located directly behind the center of the lens and is densely packed with cones, which are responsible for sharp central vision and color vision. This is a correct description of its location and function in the eye.

Question 2

The nurse is working at a summer camp for preadolescent children. One of the children comes to the nurse rubbing an eye and stating pain from getting sand in the eye. After the child is effectively treated, which teaching is the nurse prompted to provide to all the attendees?

Accepted Answer

Rubbing the eye can cause further irritation or damage, so it's important to teach children not to rub their eyes if something gets in them.

Question 3

The nurse is conducting an initial screening to determine a patient's gross hearing acuity as part of a complete physical. Which test does the nurse include in the assessment?

Accepted Answer

The whisper voice test is a simple and quick screening tool used to assess gross hearing acuity by having the patient identify whispered words or phrases.

Question 4

The nurse is attending while the HCP performs an otoscopic examination of a patient's ears. The nurse is aware that the examination is performed primarily for which purpose?

Accepted Answer

The primary purpose of an otoscopic examination is to examine the eardrum (tympanic membrane) for signs of infection, perforation, or other abnormalities.

Question 5

A patient's Snellen chart findings are 20/60. Which explanation does the nurse provide to the patient regarding this finding?

Accepted Answer

The Snellen chart result of 20/60 means the patient must be at 20 feet to see what a person with normal vision can see at 60 feet.

Question 6

The nurse is preparing a patient with diabetes mellitus for a fluorescein angiography. For which reason does the nurse understand the performance of this test?

Accepted Answer

Fluorescein angiography is a diagnostic procedure used to visualize the blood vessels in the retina to detect any leakage or damage, which is particularly useful in patients with diabetes mellitus due to the risk of diabetic retinopathy.

Question 7

A patient has an injury resulting in a major damage to the pinna of the right ear. The patient expresses fear about hearing loss in the damaged ear. Which statement by the nurse will alleviate the patient's fear?

Accepted Answer

The pinna (outer ear) is primarily involved in directing sound waves into the ear canal towards the middle and inner ear, where sound is actually processed. Damage to the pinna may affect how sound is collected and directed, but the actual hearing process involves the middle and inner ear. Therefore, stating that the impulses for hearing come from the middle and inner ear can help alleviate fears about hearing loss due to damage to the pinna.

Question 8

The nurse is giving instructions to a patient who is scheduled for an electronystagmogram due to a diagnosis of vertigo and ringing in the ears. Which finding regarding the patient's medical history will cause the nurse to notify the prescribing health care provider (HCP) for cancellation of the test?

Accepted Answer

An electronystagmogram involves recording eye movements, which can be influenced by electronic devices like pacemakers. The presence of a pacemaker may interfere with the test's electrical recordings, making it necessary to consult the healthcare provider before proceeding.

Question 9

The National Eye Institute has performed research regarding the impact of nutrition on eye diseases. Which factor does the nurse recognize as an incorrect conclusion from this research?

Accepted Answer

Intensive glycemic control in patients with diabetes mellitus can slow the progression of retinopathy but does not completely prevent it. The other options correctly reflect findings from research on nutrition and eye health.

Question 10

The nurse is conducting hearing acuity evaluation on a patient using the Rinne test. The test involves the use of a tuning fork. Which test result will be validated with the documentation "AC greater than BC"?

Accepted Answer

In a Rinne test, "AC greater than BC" means that air conduction (AC) is greater than bone conduction (BC), which is a normal finding. This is observed when the patient continues to hear the tuning fork for a longer period when it is moved away from the mastoid bone (bone conduction site) and placed near the ear canal (air conduction site), as described in option C.

Question 11

The nurse is assisting with a patient who is having a test to measure intraocular pressure. Which equipment should the nurse expect to be used?

Accepted Answer

A tonometer is specifically used to measure intraocular pressure, which is crucial in diagnosing and managing conditions like glaucoma.

Question 12

The nurse is preparing to administer eye medication as prescribed by the HCP after eye surgery for cataract removal. The HCP prescribes one drop with punctal occlusion. Which action will the nurse perform when administering this medication?

Accepted Answer

Punctal occlusion involves placing the index finger on the corner of the eye (near the nose) and applying pressure to prevent the medication from draining away through the tear duct. This technique increases the medication's absorption and effectiveness.

Question 13

During a physical examination of a patient, pupillary reflexes are checked. A light is shone into the right eye while it is observed. Pupillary reaction and pupil size are noted. Then a light is shone into the left eye as the right eye is still observed. Which response occurs during the second step of the test?

Accepted Answer

The consensual response occurs when a light is shone into one eye and the other eye, which is not directly exposed to the light, also constricts. This tests the integrity of the optic and oculomotor nerves and the brainstem pathways involved in the pupillary light reflex.

Question 14

A patient is scheduled to have cataract surgery. Which structure of the patient's eye does the nurse explain will be involved in the procedure?

Accepted Answer

Cataract surgery involves the removal and replacement of the lens of the eye, which has become opaque, impairing vision.

Question 15

The nurse performs a visual assessment on a patient and documents the findings using the acronym PERRLA. Which assessment finding does PERRLA indicate?

Accepted Answer

PERRLA stands for Pupils Equal, Round, and Reactive to Light and Accommodation, which is a common method to describe a healthy and normal eye examination finding.

Question 16

The nurse in an HCP's office is providing assistance with a patient who has purulent drainage from the ear. Which action by the HCP does the nurse expect?

Accepted Answer

Obtaining a swab of the drainage for culture is a common and important step in diagnosing the cause of purulent drainage from the ear, such as identifying any bacterial infection, which can then guide appropriate treatment.

Question 17

The nurse is collecting information about a patient's auditory system during a physical examination. Which process will the nurse perform first?

Accepted Answer

Observation is the first step in the physical examination of the auditory system. It involves looking at the patient's ears for any abnormalities, such as swelling, redness, or discharge.

Question 18

The nurse is assisting with the preparation of a patient for a cochlear implant due to profound deafness. Which teaching will the nurse reinforce for this patient?

Accepted Answer

The nurse will reinforce preparation instructions for surgery to ensure the patient is ready for the procedure.

Question 19

While checking a patient's pupils, the nurse notes that the left pupil constricts when a light is shone into the right eye. Which information does this finding suggest to the nurse?

Accepted Answer

The finding that the left pupil constricts when a light is shone into the right eye indicates a consensual response, which is a normal reflex of the pupils. This response shows that when one eye is exposed to light, both pupils constrict together, demonstrating the functionality of the optic (II) and oculomotor (III) cranial nerves.

Question 20

The nurse is collecting information about the eyes from an older adult patient. Which finding is unexpected during the examination?

Accepted Answer

The best color discrimination typically decreases with age, especially for blue, green, and purple, due to changes in the lens and possibly the retina. This makes option C unexpected compared to the other normal age-related changes listed.

Quiz 51: Sensory System Function, Assessment, and Therapeutic Measures: Vision and Hearing