No ocular trauma or surgery preceding onset of diseaseb
Bilateral involvement (verified with ICGA and/or EDI-OCT)b
Exclusion of other infectious, inflammatory or masquerading entities, in particular other stromal choroiditis entities (i.e., tuberculosis, sarcoidosis or syphilis)b
Diffuse choroiditis evidenced by ICGA and/or EDI-OCTb
Signs and symptoms of less than 4 weeks’ durationb
Absence of clinical findings compatible with chronic disease (i.e. sunset glow fundus or integumentary signs (vitiligo, alopecia & poliosis)b
Exudative retinal detachments (evidenced by pooling and pinpoint leaking points on FA and ICGA) (very helpful criterion when present)
Disc hyperfluorescence (helpful criterion).
Neurological / auditory findings (meningismus, tinnitus, acute hearing loss) (helpful criterion).