Visual snow manifests as a pan‐field, dynamic visual disturbance described as continuous television static‐like tiny flickering dots. Current diagnostic criteria further require at least two additional symptoms for visual snow syndrome (VSS) from: palinopsia (afterimages and trailing); entoptic phenomena (floaters, blue field entoptic phenomenon, photopsia, self‐light of the eye); photophobia and nyctalopia. Our objective was to compare the phenotype of VSS in an Italian and British population.

中文翻译：

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视雪综合征：意大利和英国人口的比较。

视觉降雪表现为一种泛视场，动态视觉干扰，被描述为连续的电视静态像微小的闪烁点。当前的诊断标准还要求至少有以下两种其他视觉雪综合症（VSS）症状：鸡眼（残影和尾迹）；内在现象（漂浮物，蓝场内在现象，光斑，眼睛的自光）；畏光和夜视。我们的目的是比较意大利和英国人群中VSS的表型。