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Opthalmology > Infectious diseases of the eye > Flashcards

Infectious diseases of the eye Flashcards

1
Q

What antibiotics would you give for blephartis

A

Tetracycline

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2
Q

How does cancaliculitis present

A

Unilateral red eye, watery eye, swollen lump, mucoid discharge, granules, usually caused by actionmyces israeli (gram +ve)

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3
Q

What is dacrocystitis

A

Infection of lacrimal sac - Wegners granulomatosis is a risk factor. oral abx given. Staph epidermidis in adults and H influenzae in kids.

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4
Q

What is the first sign in cavernous sinus thrombosis

A

Later gaze palsy due to CN 6 compression

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5
Q

Whats is orbital mucoymycosis

A

Fungal infection. Immunocompramised and DKA patients get it.

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6
Q

What abx to give bacterial keratitis

A

Topical fluoroquinolones

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7
Q

What stainibng would you use for keratitis

A

Gram and giemsa staining in sabouraud’s agar

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8
Q

What organisms can cause fungal keratitis

A

candida (mushroom and collar stud morphology) and filamentous fungi (due to trauma).

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9
Q

What is the important sign in acanthamoeba keratitis

A

Ring shaped stromal infiltrates and a lot of pain and wessely ring

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10
Q

What is the important sign in HS keratitis

A

Stellate, star shapes, terminal buttons.

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11
Q

What do you NOT give these patients

A

Steroid

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12
Q

What causes interstitial keratitis

A

Syphllis (tends to be bilateral) and lyme disease

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13
Q

How do you treat bacterial conjuctivitis

A

Chloramphenicol but in pregnant women give fusidic acid instead due to aplastic anaemia

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14
Q

Describe how chlamydial conjunctivits presents

A

White follicles, mucopurulent stringy discharge
investigate with giemsa stain
can be associated with reactive arthirits,
treat with azithomyocin and doxycyclin

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15
Q

What is trachoma

A

Leading cause of blindenss worldwide. Type 4 hypersenitiivity. Transmited by bazaar fly bringing chlamyida

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16
Q

Hpw does it present

A

5 stages. Stage 3 - scarring, stage 4 - trichiasis (ingrowing eyelashes towards cornea

17
Q

how to treat

A

azithromycin

18
Q

What is endopthalmitis

A

Infection of aqeuous and vitroesu humour

19
Q

How does it present

A

Redness, floaters, blurred vision, post op, corneal haze.

20
Q

What orhganism

A

Immedeate - staph epid

Later onset - propioniobacterium acnes

21
Q

What can TB uvitis cause

A

Posterior uveitis

22
Q

What is onchocerciasis and what is the treatment

A

Decreased VA, sclerosing keratitis, anterior uvetitis, can visualise microfilariae with slit lamp

Treat with Ivermectin

23
Q

What causes macular star pattern

A

Cat scratch neuroretinitis - central decrease in VBA

24
Q

What is CMV retinits

A

seen in AIDS patient - Pizza pie and cottage cheese with ketchup fundoscopy.

GIve IV ganciclovir

Opthalmology (5 decks)

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