escorcin

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.

escorcin

(ĕs-kor′sĭn)

A stain derived from escalin. It is used to stain and identify defects or injury of the cornea.