N307 - Chapter 15: Eyes

N307 - Chapter 15: Eyes

9th - 12th Grade

50 Qs

quiz-placeholder

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N307 - Chapter 15: Eyes

N307 - Chapter 15: Eyes

Assessment

Quiz

Arts

9th - 12th Grade

Easy

Created by

Marta Sisay

Used 9+ times

FREE Resource

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When examining the eye, the nurse notices that the patients eyelid margins approximate completely. The nurse recognizes that this assessment finding:

Is expected

May indicate a problem with extraocular muscles

May result in problems with tearing

Indicates increased intraocular pressure

Answer explanation

The palpebral fissure is the elliptical open space between the eyelids, and, when closed, the lid margins approximate completely, which is a normal finding

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During ocular examinations, the nurse keeps in mind that movement of the extraocular muscles is

Decreased in the older adult

Impaired in a patient with cataracts

Stimulated by cranial nerves (CNs) I and II

Stimulated by CNs III, IV, and VI

Answer explanation

Movement of the extraocular muscles is stimulated by three CNs: III, IV, and VI.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The nurse is performing an external eye examination. Which statement regarding the outer layer of the eye is true?

The outer layer of the eye is very sensitive to touch.

The outer layer of the eye is darkly pigmented to prevent light from reflecting internally.

The trigeminal nerve (CN V) and the trochlear nerve (CN IV) are stimulated when the outer surface of the eye is stimulated.

The visual receptive layer of the eye in which light waves are changed into nerve impulses is located in the outer layer of the eye.

Answer explanation

The cornea and the sclera make up the outer layer of the eye. The cornea is very sensitive to touch. The middle layer, the choroid, has dark pigmentation to prevent light from reflecting internally. The trigeminal nerve (CN V) and the facial nerve (CN VII) are stimulated when the outer surface of the eye is stimulated. The retina, in the inner layer of the eye, is where light waves are changed into nerve impulses

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When examining a patients eyes, the nurse recalls that stimulation of the sympathetic branch of the autonomic nervous system:

Causes pupillary constriction

Adjusts the eye for near vision

Elevates the eyelid and dilates the pupil

Causes contraction of the ciliary body

Answer explanation

Stimulation of the sympathetic branch of the autonomic nervous system dilates the pupil and elevates the eyelid. Parasympathetic nervous system stimulation causes the pupil to constrict. The muscle fibers of the iris contract the pupil in bright light to accommodate for near vision. The ciliary body controls the thickness of the lens.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The nurse is reviewing causes of increased intraocular pressure. Which of these factors determines intraocular pressure?

Thickness or bulging of the lens

Posterior chamber as it accommodates increased fluid

Contraction of the ciliary body in response to the aqueous within the eye

Amount of aqueous produced and resistance to its outflow at the angle of the anterior chamber

Answer explanation

Intraocular pressure is determined by a balance between the amount of aqueous produced and the resistance to its outflow at the angle of the anterior chamber. The other responses are incorrect.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The nurse is conducting a visual examination. Which of these statements regarding visual pathways and visual fields is true?

The right side of the brain interprets the vision for the right eye

The image formed on the retina is upside down and reversed from its actual appearance in the outside world

Light rays are refracted through the transparent media of the eye before striking the pupil

Light impulses are conducted through the optic nerve to the temporal lobes of the brain

Answer explanation

The image formed on the retina is upside down and reversed from its actual appearance in the outside world. The light rays are refracted through the transparent media of the eye before striking the retina, and the nerve impulses are conducted through the optic nerve tract to the visual cortex of the occipital lobe of the brain. The left side of the brain interprets vision for the right eye.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The nurse is testing a patients visual accommodation, which refers to which action?

Pupillary constriction when looking at a near object

Pupillary dilation when looking at a far object

Changes in peripheral vision in response to light

Involuntary blinking in the presence of bright light

Answer explanation

The muscle fibers of the iris contract the pupil in bright light and accommodate for near vision, which also results in pupil constriction. The other responses are not correct.

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