Final answer:
Fluorescein staining is instilled topically to diagnose abnormalities of the cornea and conjunctival epithelium or to locate foreign bodies.
Step-by-step explanation:
The diagnostic procedure that is instilled topically to diagnose abnormalities of the cornea and conjunctival epithelium or to locate foreign bodies is called fluorescein staining. It uses a yellow dye that adheres to damaged or irregular areas of the eye, which can be visible under a special blue light.
Fluorescein is a yellow dye that is applied to the surface of the eye. It adheres to damaged or irregular areas of the cornea and conjunctiva, making them visible under a special blue light called a slit lamp.
For example, if a foreign body is present on the cornea, the fluorescein dye will highlight the area around it, allowing the healthcare provider to locate and remove the foreign body.
Fluorescein staining is a safe and non-invasive procedure commonly used by ophthalmologists to evaluate eye conditions and injuries.