Inflammatory choroiditis

Summary Non‐infectious choroiditis is classically subdivided into at least two main categories, including choriocapillaritis and stromal choroiditis. In the latter, the site of inflammation is situated in the choroidal stroma. When inflammation exclusively originates from the choroidal stroma which is the target of an immune reaction such as in Vogt‐Koyanag‐Harada disease (VKH), sympathetic Ophthalmia (SO) or birdshot retinochoroiditis (BRC), the term of primary stromal choroiditis is used. When the choroidal stroma is a chance and random location of a systemic disease such as sarcoidosis, the term of secondary stromal choroiditis is used. In the choriocapillaritis group the lesion process is an inflammatory non perfusion of the choriocapillaris, a mechanism occurring or suspected to occur in diseases such as multiple evanescent white dots syndrome (MEWDS), multifocal choroiditis, acute posterior multifocal placoid pigment epitheliopathy (APMPPE). The difference of these two mechanism will be further presented with the help of practical examples presented in the same fashion as the ‘viva voce’ EBO examination.