Answer:
The best use of fluroescein stain in an eye examination is to check for corneal injuries.
Step-by-step explanation:
The fluorescein stain test is an eye examination performed by the ophthalmologist to detect corneal lesions, but it is also useful for finding foreign bodies in the eye.
This test consists of placing an orange dye on the eye surface, then applying a blue light to detect corneal lesions, which turn blue-green when present.