The Standardization of Uveitis Nomenclature (SUN) Working Group reported criteria for the diagnosis of anterior uveitis associated with Varicella Zoster Virus (VZV).
Criteria for anterior uveitis due to VZV:
(1) anterior uveitis
(2) absence of retinitis
(3) unilateral uveitis (unless there is a positive aqueous humor PCR result for VZV)
(4) at least one of the following:
(4a) positive PCR on aqueous humor for VZV
(4b) sectoral iris atrophy AND patient is >= 60 years of age
(4c) concurrent or recent dermatomal herpes zoster
(5) exclusion of syphilis, Varicella Zoster Virus, sarcoidosis, and HSV
where:
• If anterior vitreous cells are present, the severity of inflammation is less than that in the anterior chamber.
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