<unk>  refers to inflammation localized to the vitreous and peripheral retina.  Primary sites of inflammation include the vitreous of which other such entities as pars planitis, posterior cyclitis, and hyalitis are encompassed.<unk>  may either be idiopathic or associated with the development of a systemic disease such as multiple sclerosis (MS) or sarcoidosis. As such,<unk>  may be the first expression of a systemic condition.  Evidence of a systemic disorder can be found in up to one third of patients with<unk> .  There appears to be a relatively high correlation between<unk>  and the occurrence of MS.
Intermediate uveitis
Herpes simplex ocular infection
Interstitial keratitis
Graves ophthalmopathy
Fungal keratitis
Endogenous endophthalmitis
Iridocorneal endothelial syndrome
Bleb-related endophthalmitis