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METHODS : A series of tests on various parameters of visual function and driving simulator performance were performed on 12 healthy drivers , before and after pupil dilation using guttae tropicamide 1 % .
 Disease: pupil dilation; Chemical: tropicamide
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: pupil dilation; Chemical: tropicamide