es·cor·cin, escorcinol (es-kōr'sin, -sin-ol),
A brown powder derived from esculetin, a substance derived from esculin; used for the detection of defects in the cornea and conjunctiva, which it marks by a red coloration.
A stain derived from escalin. It is used to stain and identify defects or injury of the cornea.
a brown powder prepared from a substance extracted from the horse chestnut; used in detecting corneal and conjunctival lesions.