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Nine eyes from 6 patients, 74 years to 90 years of age, referred by ophthalmologists for repair of cicatricial entropion after at least 2 years of twice-a-day application of dipivefrin.
 Nine eyes from 6 patients, 74 years to 90 years of age: Subject; 6: Subject.Population; 74 years to 90 years: Subject.Age; cicatricial entropion: Effect; at least 2 years of twice-a-day application of dipivefrin: Treatment; 2 years: Treatment.Duration; twice-a-day: Treatment.Freq; dipivefrin: Treatment.Drug
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 Nine eyes from 6 patients, 74 years to 90 years of age: Subject; 6: Subject.Population; 74 years to 90 years: Subject.Age; cicatricial entropion: Effect; at least 2 years of twice-a-day application of dipivefrin: Treatment; 2 years: Treatment.Duration; twice-a-day: Treatment.Freq; dipivefrin: Treatment.Drug