Inflammatory and exudative condition of the choroid and the retina (form of posterior uveitis)
Aetiology
Most often seen in immunodeficient patients e.g. HIV/AIDS
Usually a response to viral, bacterial, fungal or protozoal infection
Pathophysiology
Acute retinal necrosis
Caused by HSV/HZV
Endogenous chorioretinitis
Very very rare
50% bacterial, 50% fungal e.g. candida
Associated with bacterial endocarditis or indwelling catheters including central lines
Toxoplasma gondii
Congenital or acquired
Associated with contaminated soil and undercooked meat
Results in a mild flu-like illness and rarely causes any further problems
In immunocompetent patients it enters latent phase with cysts forming, can reactivate
Ocular toxocaracanis (roundworm)
