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BACKGROUND: Interferon (IFN)-associated retinopathy is typically characterized by retinal hemorrhages and cotton wool spots at the posterior fundus, but visual function is usually maintained.
 retinopathy is typically characterized by retinal hemorrhages and cotton wool spots at the posterior fundus: Effect; Interferon (IFN): Treatment; Interferon: 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:
 retinopathy is typically characterized by retinal hemorrhages and cotton wool spots at the posterior fundus: Effect; Interferon (IFN): Treatment; Interferon: Treatment.Drug