2541
Normalization of generalized retinal function and progression of maculopathy after cessation of therapy in a case of severe hydroxychloroquine retinopathy with 19 years follow-up.
 ( potential therapeutic event: after ,  a case of severe hydroxychloroquine retinopathy: Subject, Normalization of generalized retinal function and progression of maculopathy: Effect, cessation of therapy: Treatment, hydroxychloroquine: Treatment, hydroxychloroquine: Treatment.Drug, hydroxychloroquine retinopathy: Treatment.Disorder, 19 years: Treatment.Time_elapsed) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( potential therapeutic event: after ,  a case of severe hydroxychloroquine retinopathy: Subject, Normalization of generalized retinal function and progression of maculopathy: Effect, cessation of therapy: Treatment, hydroxychloroquine: Treatment, hydroxychloroquine: Treatment.Drug, hydroxychloroquine retinopathy: Treatment.Disorder, 19 years: Treatment.Time_elapsed) 