lymphangiography

Patent Blue V（Acid blue 1）是一款应用于眼科的新型生物染料，特别是在进行视网膜切除手术时，用以染色以便去除内限制膜（ILM）。该染料在玻璃体视网膜手术中确保了对视网膜结构的有效标记，从而实现精确去除。光谱分析揭示，Patent Blue V在450 nm以下和600 nm以上具有强烈的吸收特性，展现蓝绿色。此外，它亦作为淋巴管造影术中的追踪剂，在染色活检手术中使用以助于淋巴结的切除。

Acid blue is a dark bluish synthetic triphenylmethane dye. It used as a food coloring. The color of the dye is pH-dependent. The structure is also redox-sensitive, changing from a reduced yellow form to an oxidized red form in solution. It is usable as a