Table 1.

Clinical evaluation of retinal changes during EAU.

Features	Grade 1	Grade 2	Grade 3	Grade 4
Retinal tissue infiltrates	1–4 small lesions or 1 linear lesion	5–10 small lesions or 2-3 linear lesions	≥10 small lesions or ≥3 linear lesions	Linear lesions confluent
Optic disc	Minimal inflammation	Mild inflammation	Moderate inflammation	Severe inflammation
Retinal vessels	Engorged vessels with no perivascular cuffing	Engorged vessels and 1–4 mild cuffings	≥4 mild cuffings or 1–3 moderate cuffings	≥3 moderate cuffings or ≥1 severe cuffing