Posterior Uveitis

Question 1

Signs of Retinitis

Answer 1

May have focal or multifocal active lesions, whitish retinal opacities with indistinct border due to surrounding oedema
as lesions become inactive, borders become defined

Question 2

Signs of Choroiditis

Answer 2

Focal, multifocal or geographic, characterised by round yellow nodule ( a lump of aggregated abnormal cells)

Question 3

Signs of Vasculitis

Answer 3

periarteritis or periblepharitis
active lesions shows yellowish perivascular cuffing
inactive lesions shows perivascular scarring

Question 4

Management of posterior uveitis of non-infectious etiology

Answer 4

Refer to ophthalmologist for anti-inflammatory agents.

Question 5

Side effects of management

Answer 5

Can raise IOP that leads to steroidal glaucoma, can cause early-onset cataract

Question 6

Toxoplasmosis pathogenesis and how infection occurs

Answer 6

Results from Toxoplasma gondii parasite, occurs by exposure to cat feces, raw food, contaminated water, contaminated blood

Question 7

Toxoplasmosis signs

Answer 7

Focal retinitis near an old pigmented scar, headlight in fog, atrophic scars with a hyperpigmented border

Question 8

Toxocariasis pathogenesis and how infection occurs

Answer 8

Results from Toxocara canis parasite from dogs, occurs by handing of dog faeces

Question 9

Toxocariasis posterior pole granuloma signs and management

Answer 9

Signs: Granuloma in posterior fundus and virtreoretinal bands and loacalised retinal detachment
M: refer for management of retinal detachment

Question 10

Toxocariasis peripheral granuloma signs and management

Answer 10

Signs: White hemispherical peripheral granuloma, vitreous band ‘dragging’ of optic disc
M: refer for removal of vitreous bands