TissueBlue 0.025% – Indications & Usage Section TissueBlue (Brilliant Blue G Ophthalmic Solution) 0.025% is is a disclosing agent indicated to selectively stain the internal limiting membrane (ILM). TissueBlue (Brilliant Blue G Ophthalmic Solution) 0.025% is is a disclosing agent indicated to selectively stain the internal limiting membrane (ILM).