Pars planitis

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Intermediate uveitis is diagnosed when the signs of uveitis are most pronounced in the vitreous, although lesser degrees of inflammation may co-exist in the anterior and posterior segments.

Pars planitis is the most common form of intermediate uveitis, and is characterised by inflammatory exudates over the inferior peripheral retina, ora serrata and pars plana. It typically affects young adults and is usually bilateral. The usual clinical course comprises chronic, low-grade inflammation with occasional exacerbations resulting in blurred vision and floaters. Although the etiology is currently unknown, occasional associations with systemic diseases including sarcoidosis, multiple sclerosis, Lyme disease, Whipple's disease and intraocular lymphoma are well-documented.