Chapter 26: The Sensory System: Eye and Ear

Chapter 26: The Sensory System: Eye and Ear

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. The nurse uses a visual aid to show how the ______ refracts light rays to be directed to the lens.

a.	pupil
b.	cornea
c.	retina
d.	ciliary body

 

 

ANS:  B

The cornea bends or refracts the light rays onto the retina. The pupil acts to regulate the entrance of light into the eye. The ciliary body helps to change the shape of the eye for far and near vision. The retina is the inner coat of the eyeball and is found in the posterior portion of it. The retina contains several layers. The layer with rods and cones acts as the receptor for light images.

 

DIF:    Cognitive Level: Knowledge            REF:   569                OBJ:   1 (clinical)

TOP:   Cornea: Function                             KEY:  Nursing Process Step: Implementation

MSC:  NCLEX: Health Promotion and Maintenance

 

2. The nurse explains that, when the physician takes a tonometer reading, the reading reflects the amount of pressure applied by the:

a.	sclera.
b.	aqueous humor.
c.	vitreous humor.
d.	cornea.

 

 

ANS:  B

The tonometer reads the pressure exerted by the aqueous humor in the anterior chamber. The sclera is the part of the eyeball that is opaque white and covers the posterior portion of the eyeball. The vitreous humor is the substance found in the posterior chamber of the eye between the lens and the retina. The cornea is a transparent structure in the eye that allows light to hit the lens. It is involved in the bending of light rays.

 

DIF:    Cognitive Level: Comprehension     REF:   575                OBJ:   1 (theory)

TOP:   Optic Pressure                                 KEY:  Nursing Process Step: Implementation

MSC:  NCLEX: Health Promotion and Maintenance

 

3. The nurse explains to the patient that the assessment of a choked disc while examining the fundus of the eye indicates:

a.	the disc has an infarct.
b.	there is increased intracranial pressure (ICP).
c.	there is significant hypertension.
d.	the lens has become opaque.

 

 

ANS:  B

Visualization of the optic disc provides information about the pressure within the eye and within the skull. When intracranial pressure gets higher, the optic disc appears “swollen” or “choked.”

 

DIF:    Cognitive Level: Application           REF:   569                OBJ:   2 (theory)

TOP:   Fundus Assessment: Choked Disc    KEY:  Nursing Process Step: Assessment

MSC:  NCLEX: Health Promotion and Maintenance

 

4. An office assistant tells the nurse his job requires him to work at his computer 7 to 8 hours each day. What preventive information should the nurse provide to the patient?

a.	Wear protective goggles.
b.	Wear corrective eyeglasses.
c.	Rest his eyes every 2 hours.
d.	Irrigate his eyes every day.

 

 

ANS:  C

Resting the muscles of the eye every several hours helps prevent eye fatigue. Protective goggles will not help to prevent eye strain. There is no indication the patient has visual disturbances or eye irritation.

 

DIF:    Cognitive Level: Comprehension     REF:   571                OBJ:   1 (clinical)

TOP:   Eye Rest         KEY:  Nursing Process Step: Implementation

MSC:  NCLEX: Health Promotion and Maintenance

 

5. The nurse is reviewing the health history of a 26-year-old patient. Which finding is consistent with recommendations concerning preventive eye examinations?

a.	The patient has had annual eye examinations since age 18.
b.	The patient has not had an eye examination since age 18.
c.	The patient had a baseline eye examination at age 25.
d.	The patient had an eye examination 3 years ago.

 

 

ANS:  C

Adults should have an eye examination once between ages 20 and 29, twice between ages 30 and 39, and a baseline screening at age 40. After age 65, eyes should be examined by an eye specialist every 2 years.

 

DIF:    Cognitive Level: Application           REF:   571                OBJ:   1 (theory)

TOP:   Periodic Eye Examination: Frequency

KEY:  Nursing Process Step: Evaluation

MSC:  NCLEX: Health Promotion and Maintenance: Prevention and Early Detection of Disease