Classification of uveitis

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The use of classification criteria, supported by standardisation guidelines, is very important for disorders that have a multitude of associated aetiologies. The most widely used classification of uveitis is the one devised by the International Uveitis Study Group (IUSG) in 1987, based on the anatomical location of the inflammation. This classification includes anterior uveitis (iritis, iridocyclitis, and anterior cyclitis), intermediate uveitis (pars planitis, posterior cyclitis, and hyalitis), posterior uveitis (focal, multifocal, or diffuse choroiditis, chorioretinitis, retinitis, and neuroretinitis) or panuveitis (anterior chamber, vitreous, retina, and choroid). Today's uveitis nomenclature has been revised regarding the anatomical location and the grade of inflammation, and supplemented by the inclusion of definitions for onset, duration and course. While helpful for clinical practice and clinical trials, further work still needs to be carried out concentrating on validated clinical assessment tools for activity and damage for common, specific uveitic entities.

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