Sensory/Integumentary System (Exam One) Flashcards
What are the essential functions of the structures of the eye?
- Protect the eye
- Prevent the eye from drying out
The vitreous humor gives the eyeball its what? How is the consistency of the vitreous humor described?
- Gives the eyeball its shape
- Jelly like consistency
The aqueous humor encompasses which portion of the eyeball? How is the consistency of the aqueous humor described?
HINT: Think “aque” and “aqua” where “aqua” = water
- Located in the frontal portion of the eyeball
- Water like consistency
Cones are responsible for what?
Colored vision
Rods are responsible for what?
Various shades of grey color
The optic nerve protrudes from which portion of the eyeball?
Posterior (back) portion of the eyeball
The optic nerve is known as which cranial nerve?
Cranial nerve II
What two tests assess visual acuity?
- Snellen
- E-chart
How many feet away from the chart is the patient during the Snellen test? How would the nurse assess each eye individually?
- 20 feet
- The patient will cover one eye with their hand
How far is the E-chart held from the face during testing?
14 inches
The E-chart is used for individual who struggle with this task.
Reading
The nurse should take note of which eye diseases when assessing family history? Why are these diseases specifically important?
- Glaucoma
- Diabetes
- Blindness
- Cataracts
-They are genetic
What is normal vision? How is this interpreted?
- 20/20
- At 20 feet the patient can read what the normal eye can read at the same distance
Low vision occurs at what?
20/70
Legal blindness occurs at what?
20/200
How is the term ‘right eye’ written when documenting?
OD
How is the term ‘left eye’ written when documenting?
OS
How is the term ‘both eyes’ written when documenting?
OU
Besides the visual acuity, the nurse should include what in her documentation?
Whether visual acuity is achieved with/without corrective lenses
How is muscle balance and movement assessed in the eyeball?
Six Cardinal Field Test
The six cardinal field test assesses which cranial nerves?
- Cranial nerve III (3)
- Cranial nerve IV (4)
- Cranial nerve VI (6)
Define esotropia.
Deviation of eye towards nose
Define exotropia.
Deviation of eye away from nose
Define hypotropia.
Deviation of eye downward
Define hypertropia.
Deviation of eye upward
What is ptosis? Ptosis is often seen in what disease?
- Drooping of the eyelid
- Seen in stroke patients
The eyes should be ______.
Symmetrical
Yellowish discoloration of the eyes is indicative of what?
Jaundice
What is a tonometer? Tonometer assesses for which disease? Can this be performed by the nurse?
- Checks intraocular pressure of the eyeball
- Assesses for glaucoma
-Yes
Distorted depth perception puts the patient at an increased risk for what?
Falls
What is arcus senilis? What clinical manifestation is associated with arcus senilis?
- Lipid deposit within the cornea
- White ring around the iris
List important vision changes within the older adult.
- Yellowing of the lens
- Distorted depth perception
- Dry eyes
- Arcus senilis
What should be obtained before a patient begins antibiotic treatment?
Culture
How often is an eye exam needed if the patients wears corrective lenses, has an eye disease, or experiences change in vision?
Annually
In what direction should the eye be wiped?
From the inner eye to the outer eye
What mechanism or method is used to irrigate the eyeball?
- Morgan Lens
- IV tubing
The nurse should educate the patient to cover what when inserting eye drops or eye ointment? Why is this important?
- Cover the punctum (tear duct)
- Prevents medications from being absorbed systemically
When administering medication to the eye, what should never come in contact with the eye itself?
The tip of the medicine dropper
How long should the patient wait between eye drop administration?
5 to 10 minutes
Eye ointment is always administer to which portion of the eye? In what direction should the ointment be applied?
- The bottom eyelid
- Inner to outer
The nurse should encourage a patient with an eye patch to avoid which activities?
- Watching television
- Reading
What is conjunctivitis?
Inflammation of the conjunctiva that is either bacterial or viral
Bacterial conjunctivitis is also referred to as what?
Pinkeye
What are the signs and symptoms of conjunctivitis?
- Redness
- Crusty exudate
- Pain
- Itching
- Excessive tearing
What is the most effective method in preventing bacterial and bacterial transfer?
Handwashing!
What is a hordeolum? It is also known as what?
- Abscess in the sebaceous gland at the eyelid
- Sty
What is a chalazion? How does it differ from hordeolum? What might a chalazion require?
- Sty that is larger in size
- Can cause pain and pressure to the cornea
- May require I&D (incision and drainage)
What is blepharitis? Is it short-term or long-term? What is required with blepharitis?
- Inflammation of eyelid
- Long-term problem
- Requires daily cleaning
What is keratitis?
Inflammation of the cornea
Patients with keratitis have a sensitivity to what?
Light
What is astigmatism? What does it cause?
- Uneven curves of the cornea
- Causes blurry vision
Define hyperopia.
Farsightedness (can see far away)
Define myopia.
Nearsightedness (can see close)
What is presbyopia? At what age does this occur?
- Age related changes to vision
- After 40 years old
How are refractive vision disorders generally treated?
- Glasses
- Contact lenses
What is the nursing priority for visually impaired patients?
Safety
How might a patient describe their vision if they have diabetic retinopathy? What is diabetic retinopathy? What causes diabetic retinopathy?
- Dark spots or strings floating in the vision
- Vascular change of retinal vessels caused by lack of blood sugar control
What might the patient experience if they suffer from retinal detachment?
- Sudden vision changes
- Loss of peripheral vision
- Decreased visual acuity
Will retinal detachment cause pain? Why or why not?
- No pain
- There are no sensory nerves in the retina
What are the treatment options for a patient with a detached retina?
- Laser Surgery
- Cryopexy
- Pneumatic retinopexy
What is pneumatic retinopexy?
Injects air or gas into the chamber to hold the retina in place