Fluresin 600mg Injection is used before eye examinations. It has tissue staining properties. Once injected, it stains the damaged cells of the eye. Fluorescein is a diagnostic contrast agent particularly used in various ophthalmic procedures, such as checking for any corneal or vessel abnormalities. The application of fluorescein also extends to bioimaging whole anatomic structures and even further to cellular components in immunohistological staining.

Trypan blue ophthalmic solution is a dye used in ophthalmic surgery, primarily in cataract surgery, to stain the anterior lens capsule. This staining helps surgeons visualize the capsule more clearly, particularly when red reflex is poor or the pupil is constricted. It also improves the visibility of Descemet's membrane during surgery.