Conjunctivitis

Question 1

explain the pathophysiology of conjunctivitis

Answer 1

the conjunctiva is a serous membrane that lines the white of the eye, this condition involves this membrane becoming inflamed by some MO or other irritant like allergens etc.

Question 2

list 5 risk factors for infectious conjunctivitis

Answer 2

1. exposure to previous case
2. poor contact lens hygiene
3. contaminated cosmetics
4. chronic dry eye or blepharitis
5. immunosuppression

Question 3

what are 6 common bacteria that cause conjunctivitis in neonates?

Answer 3

1. C. trachomatis
2. N. gonorrhoeae
3. N. meningitidis
4. H. influenzae
5. S. aureus
6. S. pneumoniae

Question 4

what are 3 common bacteria that cause conjunctivitis in children?

Answer 4

1. H. influenzae
2. S. aureus
3. S. pneumoniae

Question 5

what are 7 common bacteria that cause conjunctivitis in adults

Answer 5

1. C. trachomatis
2. N. gonorrhoeae
3. N. meningitidis
4. H. influenzae
5. S. aureus
6. S. pneumoniae
7. coagulase-negative staph organisms

Question 6

what is the most common viral cause of conjunctivitis?

Answer 6

adenovirus

Question 7

what are 3 less common viral causes of conjunctivitis?

Answer 7

1. HPV
2. herpes zoster
3. herpes simplex

Question 8

what causes allergic conjunctivitis at a cellular level?

Answer 8

IgE-mediated reactions triggered by exposure to allergen

Question 9

describe acute allergic conjunctivitis

Answer 9

sudden and intense onset, usually w/i 30 min of exposure

Question 10

describe seasonal allergic conjunctivitis

Answer 10

less sudden onset, usually developing over days to weeks and is often due to outdoor allergens. Often predictable in a yearly pattern

Question 11

describe perennial allergic conjunctivitis

Answer 11

much slower and milder onset that may get better or worse over the year. Chronic and often the result of year-round exposure

Question 12

describe the itching in AC

Answer 12

very itchy; cardinal symptom

Question 13

describe swelling in AC

Answer 13

moderate to severe

Question 14

describe the discharge in AC

Answer 14

serous or mucoid, often described as “tearing”. There may be morning crusting

Question 15

allergic conjunctivitis usually involves ___ (both/ one) eye(s)

Answer 15

both

Question 16

describe the itching in bacterial conjunctivitis

Answer 16

minimal

Question 17

describe the discharge in bacterial conjunctivitis

Answer 17

purulent or mucopurulent, may be thick, white, yellow, or green, occurs throughout the days and quicly reappears after wiping away. There is often crusting in the morining

Question 18

t/f bacterial conjunctivitis is highly contagious

Answer 18

t

Question 19

t/f BC is usually unilateral, but may present bilaterally

Answer 19

t

Question 20

is there photophobia in BC?

Answer 20

no

Question 21

t/f BC can happen in conjunction with otitis media

Answer 21

t

Question 22

there is a ____ (higher/lower) chance of BC if the patient is: less than 6 y/o, presents in winter, has no previous history of conjunctivitis

Answer 22

higher

Question 23

describe the itch in viral conjunctivitis

Answer 23

minimal

Question 24

which type of conjuctivitis is associated with the sensation if grettiness, burning, foreign body sensation, mild photophobia and irritation?

Answer 24

viral

Question 25

describe the discharge in viral conjunctivitis

Answer 25

serous, mucuserous, may be stringy, does not appear continuosly the way it does in bacterial

Question 26

describe the eye involvement of viral conjunctivitis

Answer 26

starts in one eye and then spreads to both within 8-24 hours

Question 27

viral conjunctivitis course parallels the course of what virus?

Answer 27

the common cold

Question 28

t/f viral conunctivitis ofetn gets worse for 3-5 days and resolves afetr 1-3 weeks

Answer 28

t

Question 29

what factors make viral conjunctivitis more likely?

Answer 29

1. adult age
2. summer
3. upper respiratory tract infection