D AND C YELLOW NO. 7
\dˈiː and sˈiː jˈɛlə͡ʊ nˈə͡ʊ], \dˈiː and sˈiː jˈɛləʊ nˈəʊ], \d_ˈiː_ a_n_d s_ˈiː j_ˈɛ_l_əʊ n_ˈəʊ]\
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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)
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