<unk>  is a form of<unk>  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 an isolated eye disease or associated with the development of a systemic disease such as multiple sclerosis or sarcoidosis. As such,<unk>  may be the first expression of a systemic condition. Infectious causes of<unk>  include Epstein-Barr virus infection, Lyme disease, HTLV-1 virus infection, cat scratch disease, and hepatitis C. Permanent loss of vision is most commonly seen in patients with chronic cystoid macular edema (CME). Every effort must be made to eradicate CME when present. Other less common causes of visual loss include retinal detachment, glaucoma, band keratopathy, cataract, vitreous hemorrhage, epiretinal membrane and choroidal neovascularization.
Intermediate uveitis
Neurotrophic keratitis
Nummular keratitis
Fuchs heterochromic iridocyclitis
Interstitial keratitis
Diffuse lamellar keratitis
Infiltrative ophthalmopathy
Peripheral ulcerative keratitis