Patent Blue V

Patent Blue V (Acid blue 1) is a novel biological dye that can be used as an intraocular dye for retinectomy. Retinectomy refers to the removal of the translucent inner limiting membrane (ILM) . The application of appropriate dyes in vitreoretinal surgery can achieve the purpose of complete removal. Patent Blue V can be used to stain retinal premembranous structures. Spectral analysis shows that Patent Blue V has strong absorption below 450 nm and above 600 nm, showing a blue-green color. Patent Blue V is also used as a marker in lymphangiography for resection of neoplastic lymph nodes[1][2].