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62 Cards in this Set

  • Front
  • Back
Glaucoma is the second leading cause of blindness world wide. True/False
True
The percentage of the population that will develop glaucoma decreases or increases with advancing age?
Increases
Where is glaucoma prevalent?
In people with diabetes
What are the types of glaucoma? x4
1. Open-angle
2. Angle-closure
3. Low-tension
4. Secondary
What is the most common form of glaucoma?
Open-angle
What can glaucoma cause?
Degeneration of the optic nerve
How is increased IOP (intraocular pressure) caused?
What is it a symptom of?
- A buildup of aqueous humor
- Glaucoma
How does the aqueous humor accumulate?
When the angle formed by the iris and the cornea is reduced and drainage of fluid is blocked
What are the two main classifications of drugs used to treat glaucoma?
Drugs that decrease formation of the aqueous humor and drugs that promoe drainage of aqueous humor
What classes of drugs decrease formation of the aqueous humor? x3
1. Beta blockers
2. Alpha-adrenergic agonists
3. Carbonic anhydrase inhibitors
What classes of drugs promote the drainage of aqueous humor? x3
1. Cholinergics
2. Cholinesterase inhibitors
3. Prostiglandin analouges
What do miotics do?
Cause contraction of the pupil
Perception of balance and movement is a function of what? x3
1. Eyes
2. Inner ear
3. Sense receptors on the skin and skeleton
What do the semicircular canals in the inner ear control?
The sense of equilibrium
Otosclerosis and autoimmune diseases such as multiple sclerosis can cause what?
Hearing loss
SSHL is treated with what?
Glucocorticosteroids
Otosclerosis can cause what?
Ringing in the ears (tinnitus)
Tinnitus can be drug induced. True/False
If so what are the drugs?
-True
-Alcohol and asprin
What two kinds of drugs can cause ototoxicity?
Aminoglycoside anti-infectives and loop diuretics
BPPV is the second leading cause of vertigo. True/False
False, It's the number 1 cause
Ménière's disease is the second most common cause of vertigo. True/False
True
What is vertigo?
A balance disorder caused by a neural mismatch or sensory conflict
How can vertigo occur? x5
1. Head trama or degeneration of otolith organs
2. Inflammation of the vestibular nerve
3. Bacterial infection of the labyrinths
4. Brainstem or cerebral pathology
5. Ménière's disease
Vertigo and other balance disorders produce what symptoms? x5
1. Dizziness or spinning
2. Nausea and vomiting
3. Blurred vision
4. Disorientation
5. A feeling of falling
Treatment of balance disorders may include what? x3
1. Physical thearapy
2. Diet changes
3. Lifestyle changes
When drug therapy is recommended, what is most commonly used?
Antihistamines
What do antihistimines have?
Anticholinergic actions that can moderate symptoms of motion sickness. They are contradicted in people with prostate disease, asthma, and woman who are lactating
Where is a scopolamine transdermal patch placed to prevent motion sickness?
Behind the ear
What is ear pain called?
What is it a symptom of?
-Auralgia or otalgia

1. Otitis media
2. Otitis externa
3. Other ear disorders
How is ear pain treated? x3
1. Topical analgesics
2. Local anesthetics
3. Oral analgesics
When the ear is inflamed, otic suspensions are less soothing than solutions containing alcohol. True/False
False
Water-clogged ears and swimmer's ear are different conditions that often get confused. True/False
True
Swimmer's ear does what?
Produces inflammation and infection of the external ear
What are safe and effective for the treatment of water-clogged ears?
Nonperscription drying agents
Cerumen (earwax) is a normal but unnecessary substance produced by the ear. True/False
False
What is cerumen?
What does it provide?
What does it do?
- A bactericidal and water repellant.
- A barrier to entry of airborne substances
-Lubricates the skin of the external ear canal
You can use cotton-tipped applicators or other small sharp objects to remove earwax. True/False
False
What are the principal ingredients found in crumenolytics? x2
1. Emollients
2. Carbamide peroxide
What should you do after administration of emollients or peroxide-based agents?
Genlty clense the affected ear with warm water to remove cerumen that has become dislodged
What is belpharitis?
A chronic eye disease that produces distinctive flaky scales on the eyelids and eyelashes.
What can conjunctivitis (pink eye) be caused by?
A virus or bacteria
How is uveitis (inflammation of the uvea) treated?
With administration of coritciosteroids, mydratics, and anti-infectives or antivirals as appropriate
Microbial keratitis and fungal keratitis are most commonly caused by what? x3
1. Trauma
2. Immunodeficiency
3. Chronic eye surface diseases
Soft contact wearers are not at risk for fungal keratitis. True/False
False
What is a stye?
A small, painful lump on the eyelid that is caused by an acute self-limiting infection of the oil glands of the eyelid
What is CMV retinitis?
An opportunistic infection in the eye that occurs in patients who have HIV infection/AIDS or who take immunosuppressive drugs. If it is untreated it can cause blindness.
How many cases of blindness annually does herpetic corneal disease cause?
Over 500,000
How are herpes infections of the eye treated? x3
1. Antiviral eye drops
2. Orally administered drugs
3. Both
Where does herpes virus live?
What does it produce when it becomes active?
- Around nerve fibers
- Painful symptoms
What causes ocular toxoplasmosis?
How is it transmitted? x2
- Protozoa

1. Handling or eating raw and undercooked meat
2. Handling cat feces
What can toxoplasmosis cause?
How is it treated?
1. Ocular inflammination
2. Vasculitis
3. Uveitis
4. Retinal edema

- By administering pyrimethamine and sulfonamides
What are helminthes?
Parasitic worms that cause eye infections and blindness
What is onchocerciasis (river blindness) caused by?
It is the second leading caused of infectious blindess in the world. True/False
- A round worm
- True
How is onchocerciasis treated?
By administering a single dose of ivermecin yearly
How is cysticercosis transmitted?
By eatting undercooked pork
How is cysicercosis treated? x3
1. praziquantel
2. Coritcosteroids
3. Surgical removal of the living worms
Toxocariasis is the leading cause of uveitis world wide. True/False
False, fifth leading cause
How is toxocariasis treated? x2
1. Topical coritcosteroids
2. Systemic anthelminthics
What are the risk factors for developing otitis externa? x5
1. Exposure to excessive moisture
2. High environmental temperature
3. Irritation caused by earwax removal
4. Insertion of objects into the ear
5. Chronic dermatological disease
What is otitis media?
Inflammation of the middle ear
What can excessive use of anti-infectives to treat otitis media do?
Increase the risk of development of bacterial resistance
Decongestants and antihistamines are recommended for for prophylaxis or treatment of otitis media in children. True/False
False