4: Microbiology Flashcards Preview

Ophthalmology Week 1 2017/18 > 4: Microbiology > Flashcards

Flashcards in 4: Microbiology Deck (53)
Loading flashcards...
1

What is conjunctivitis?

Infectious inflammation of the conjunctiva

2

What is keratitis?

Infectious inflammation of the cornea

3

What is endophthalmitis?

Infectious inflammation of the entire eye

4

What is chorioretinitis?

Inflammation of the choroid and retina (back of the eye)

5

What is dacrocystitis?

Infectious inflammation of the lacrimal SAC

6

Which microbes cause conjunctivits?

Bacteria

Viruses

7

How can you tell the difference between bacterial and viral conjunctivitis?

Bacterial - loads of pus

Viral - watery

8

What are the symptoms of conjunctivitis?

Red eye

Itchy, gritty, watery eye

9

All neonates with conjunctivitis should be referred to who?

Ophthalmology

10

Which bacteria can cause conjunctivitis?

Staph aureus

Strep pneumoniae

H. influenzae (especially in children)

Chlamydia trachomatis

Neisseria gonorrhoeae

11

Which bacteria causes bacterial conjunctivitis especially in children?

H. influenzae

12

Which STI can cause bacterial conjunctivits which is chronic, unresponsive to previous treatment and accompanied by urethritis or vaginitis?

Chlamydia trachomatis

13

What must you do if you diagnose chlamydial conjunctivitis?

Alert people the patient has been in contact with

14

What are some additional features of chlamydial conjunctivitis compared to normal bacterial conjunctivitis?

Follicles under eyelid "rice grain pattern"

Subtarsal scarring if left untreated

15

How is bacterial conjunctivitis investigated?

Swab

16

How is bacterial conjunctivitis treated?

Topical antibiotics

Chloramphenicol drops (4x a day)

Oxytetracycline (for chlamydia)

17

Which viruses can cause conjunctivitis?

Adenovirus

Herpes simplex virus

Herpes zoster virus

18

What is the difference between bacterial and viral conjunctivitis?

Bacterial - pus

Viral - watery

19

What may you see along conjunctivitis in someone with herpes simplex infection?

Cold sores

20

Which virus reactivates in elderly people and can cause a painful rash in the dermatomes for CN V?

Herpes zoster virus

21

What is the technical name for shingles affecting the forehead and eye area?

Ophthalmic zoster

22

How is viral conjunctivitis investigated?

Swab

23

How is ophthalmic zoster treated?

Oral antivirals

Aciclovir

(add on antibiotics if at risk of secondary infection)

24

What can ophthalmic zoster cause if untreated?

Vision loss

Post-herpetic neuralgia

25

Which microbes can cause a keratitis?

Bacteria

Viruses

Fungi

26

What does a bacterial keratitis look like?

Red eye

Hypopyon

27

What is a hypopyon?

Exudate in anterior chamber at iridocorneal angle

Seen in bacterial keratitis

28

What name is given to a collection of pus in the anterior chamber as seen in bacterial keratitis?

Hypopyon

29

Which Gram negative bacillus is a common cause of keratitis in people who wear contact lenses?

Pseudomonas

30

How is bacterial keratitis treated?

Topical antibiotics

HOURLY chloramphenicol drops

ofloxacin