Fluorescein

Alcon Brand of Fluorescein Sodium; Allergan Brand of Fluorescein Sodium; C.I. 45350; Cahill May Roberts Brand of Fluorescein Sodium; Chauvin Brand of Fluorescein Sodium; Colircusi Fluoresceina; D & C Yellow No. 7; D & C Yellow No. 8; D and C Yellow No. 7
A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium, such as the aqueous humor, and is used therapeutically as a diagnostic aid in corneal injuries and corneal trauma. It has been approved by FDA for use in externally applied drugs and cosmetics. (From Merck Index, 12th ed; American Medical Association Drug Evaluations; 1995, p2275)