What is your approach to the workup for an underlying systemic condition in a patient presenting with retinal vasculitis?

Retinal vasculitis is a frequently misunderstood condition. My colleagues and I have written about it on several occasions such as in Current Opinion in Rheumatology, 2016. Retinal vasculitis is often diagnosed by an ophthalmologist on the basis of vascular leakage in a test called a fluorescein ang...