☒秀法显示该围 Epidemiology Approximately 5%of the general population over 60 years old have occludable angles 0.5%of these develop angle-closure Usually bilateral (develops in 50%of untreated fellow eyes within 5 years) Epidemiology ◼ Approximately 5% of the general population over 60 years old have occludable angles ◼ 0.5% of these develop angle-closure ◼ Usually bilateral (develops in 50% of untreated fellow eyes within 5 years)