Clinical Micro - Eye

Front 1

What is Blepharitis:

Back 1

inflammation of the lower portion of the eyelids and eyelashes.

usu d/t

Hint 1

Staph Aureus

Front 2

Dacryocystitis:

Back 2

inflammation of the lacrimal sac

what patient population is predisposed?

Hint 2

Older patients are predisposed because of lost elasticity

Front 3

Patient presents with red sided watery discharge from eye, redness, and irritation. Hx reveals he had a URI a few days ago. What do you suspect?

Back 3

Viral conjunctivitis

How do you treat?

Hint 3

Treat with cool compresses, artificial tears, topical steroids

Front 4

Patient presents with redness and irritation in left eye. PE reveals swelling of the conunctiva with a stringy discharge. What do you suspect? What bugs are most common ?

Back 4

Bacterial conjunctivitis
 Staphylococcus aureus, Streptococcus pneumoniae, Haemophilus influenzae

What about infants?

Hint 4

Haemophilus influenzae, Neisseria gonorrhoeae, Streptococcus pneumonia

Front 5

What are the common causative agents of Ophthalmia neonatorum

Back 5

Neisseria gonorrhoeae, Chlamydia trachomatis, Herpes simplex virus

This is Severe conjuncitivitis of newborn, acquired when Mom has an STD

Front 6

Endophthalmitis (Intraocular infection) Occurs most commonly after _

Back 6

cataract surgery

What is the likely causative agent

Hint 6

Staph Epidermidis (or Pseudomonas – rare)

Front 7

Requires factors X and V for growth! IE grow on chocolate agar!

Back 7

Haemophilus Influenzae

virulence?

Hint 7

pili

Front 8

Gram (+) cocci, seen in pairs

Back 8

Staph Pneumoniae

o Pathogenesis:

Hint 8

Capsule, interferes with C3b opsonization – prevents phagocytosis

Front 9

Alpha hemolysis on blood agar (green zone) is characteristic of...

Back 9

 Staph Pneumoniae ( Gram + diplococci)

Front 10

Chylamydia Trachomatis can cause what eye dz?

Back 10

trachoma


How do you dx?

Hint 10

immunofluroescence

Front 11

MOTT infections are a/w _ and can cause _ and _

Back 11

contact lenses

keratitis and corneal ulcers

Front 12

Result of human bites?

Back 12

Eikenella corrodens

characteristics?

Hint 12

Gram neg rods

Forms pits on the surface of agar in which it’s grown (corrodes)

Front 13

Primarily a pathogen of squirrels and rabbits, gram neg coccobacillus

Back 13

Francisella tularensis

Hint 13

Causes tularemia – highly infectious!

Front 14

Cat scratch disease

Back 14

Bartonella Henselae

characteristics?

Hint 14

Gram negative bacillus

Front 15

What Can cause parinaud’s Oculoglandular syndrome

Back 15

Bartonella Henselae (cat scratch dz)

Front 16

Dendritic Keratitis (branches out in a dendritic pattern) is characteristic of -__

Back 16

HSV

Front 17

Wart like lesions on the lid margins is characteristic of _

Back 17

Viral blepharitis - Varicella

Wartlike lesions are mollusum contagiosum from the pox virus

Front 18

Patient presents with sore throat, red eyes and fever. What virus is likely responsible?

Back 18

Adenovirus - common cause of the common cold and can cause pharyngoconjunctival fever

Front 19

A patient with known AIDS presents with visual problems: floaters, flashes and blind spots. What do you suspect

Back 19

CMV retinitis
(dsDNA)

Front 20

A combination of wool spots, infiltrates and hemorrhaging in the retina is characteristic of what condition

Back 20

pizza pie retinopathy
caused by...CMV

This is primarily seen in what patient population

Hint 20

AIDS and immunocompromised

Front 21

_: Abundant macroconidia and miroconidia. Macro are multi-celled and crescent shaped

Back 21

Fusarium sp (fungus)

this can cause what conditions

Hint 21

keratitis, endophthalmus

Front 22

MC encountered genus of fungi in the lab (next to candida)

Back 22

Aspergillosis

known to cause what conditions

Hint 22

opportunistic infections

Front 23

A patient who is a gardener presents with an eye infection. Culture shows growth on potato dextrose agar of a velvety to cottony, pale pink colony. Dx?

Back 23

Acremonium spp

Hint 23

o Characteristics: possess fine, narrow, septate hyphae. Unbranched, solitary phialides are formed directly on hyphal tips. On the tips of these are the conidia which appear in clusters or balls

Front 24

diabetic ketoacidosis predisposes someone to what type of infection by what fungi

Back 24

Zygomycosis - Rhinocerebral infection by Rhizopus.

This is AKA...

Hint 24

Black bread mold

Front 25

Black bread mold?

Back 25

Rhizopus

causes a rhinocerebral infection (zyogmycosis that is often fatal)

characteristics?

Hint 25

formation of sporangiophores singly or in groups!


fast growing colonies that form a dense cottony growth

Front 26

formation of sporangiophores singly or in groups should tip you off to...

Back 26

rhizopus.

Nosocomial infections are due to _ or _

Hint 26

contaminated adhesive tape, or contaminated wooden tongue depressors.

Front 27

roth’s spots, or white centered retinal hemorrhages are a/w _

Back 27

candida infection

Front 28

Infective form of Toxoplasma is the _

Back 28

tachyzoite

How do you dx?

Hint 28

Indirect immunoflurorescent Assay (IFA)

Front 29

of River Blindness is caused by __

Back 29

Ochocerca volvulus

which is spread via the _

Hint 29

black fly - simulium

these are capable of causing secondary cataracts and ocular lesions (as the parasite dies it triggers an inflammatory response in the eyes)

Front 30

Seen in people who work closely with sheep and goats

Back 30

Myiasis -Transmitted by sheep botfly oestrus ovis

Can cause severe conjunctivitis

Front 31

Most contact lens infections are _ , secondly being _

Back 31

bacterial, fungal

Front 32

A patient who uses home-made contact solution or goes swimming in their contacts is at risk for what infection by what bug

Back 32

Keratitis

Axanthamoeba
o Free living amoebas,

Front 33

what stain do you use to dx bacillus cereus?

Back 33

malachite green (stains spores)

Although we most infamously know this for fried rice emetic syndrome, it is also an infection that has a predilection for contact lenses