Objective. Behvet's syndrome (BS) is a systemic vasculitis, which may involve multiple organ systems simultaneously. Clinical findings in BS often fit into well-recognised patterns, such as the association between papulo-pustular skin lesions and arthritis. We have recently observed a distinct pattern, in which a subtype of neuro-Behcet's syndrome (NBS) is often preceded by specific ophthalmic manifestations of the disease process. The purpose of this study is to evaluate the association between the parenchymal subtype of NBS and posterior uveitis (PU).