Conjunctivitis Flashcards Preview

YR3: Opthalmology > Conjunctivitis > Flashcards

Flashcards in Conjunctivitis Deck (17)
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1

What is conjunctivitis?

Inflammation of the conjunctiva.

2

What is the name of conjunctivitis when associated with inflammation of the cornea?

Keratoconjunctivitis

3

What is the name of conjunctivitis when associated with eye lid involvement?

Blepharoconjunctivitis

4

Describe the infectious aetiology of conjunctivitis

Viral: Adenovirus, HSV, EBV, Enterovirus, Coxsackie
Bacterial: Pneumococcus, Staph A, H.influenza, Chlamydia

5

Describe the non-infectious aetiology of conjunctivitis

Allergic (type 1) e.g. caused by pollen, dust, chemical scents
Mechanical/irritative/toxic
Immune-mediated
Neoplastic (e.g. sebaceous gland carcinoma)

6

Describe the aetiology of conjunctivitis

More commonly caused by infection but can have an allergic cause

7

Describe the epidemiology of conjunctivitis

WORLDWIDE distribution
Affects any age group
No gender, ethnic or social preponderance

8

List 4 symptoms of conjunctivitis

Red eye (usually generalised + often bilateral)= conjunctival hyperaemia/ "pink eye"
Photophobia (suggest corneal involvement)
Visual acuity usually unaltered
Eyelids stuck together: Bacterial + viral

9

How do bacterial and viral conjunctivitis differ?

Viral = painless
Bacterial = painful

10

Which symptoms suggest an allergic form of conjunctivitis?

Irritation, discomfort + grittiness (common in allergic but also others)
Itchiness + sneezing
Similar Sx at same time last year (seasonal element)

11

Describe the difference in discharge in each form of conjunctivitis

Watery (clear discharge): viral
Mucoid: allergic
Purulent (yellow discharge!): bacterial

12

List signs of conjunctivitis

Conjunctival injection (i.e. blood shot eyes)
Dilated conjunctival vessels
Conjunctival chemosis (swell of conjunctiva)
(allergic immune response)

13

How is conjunctivitis usually diagnosed?

Following hx + examination

14

List 3 further investigations that may be performed in conjunctivitis

Rapid adenovirus immunoassay (positive if adenovirus infection)
Cell culture
PCR

15

Give a risk factor for conjunctivitis

use of contact lenses

16

Give 2 signs seen in viral conjunctivitis

Superficial punctate keratopathy
Conjunctival follicles (round collections of lymphocytes appearing as small domeshaped nodules)

17

Name a sign seen in allergic conjunctivitis

Conjunctival papillae