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DESIGN : This trial evaluated the effect of placebo , 0 . 5 % aqueous timolol ( timolol solution ) and a 0 . 5 % timolol suspension that forms a gel on application to the conjunctiva ( timolol gellan ) on the 24 - hour heart rate in patients currently being treated for glaucoma to quantify the reduction in mean heart rate .
 Chemical: timolol; Chemical: timolol; Chemical: timolol; Chemical: timolol; Disease: glaucoma
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:
 Chemical: timolol; Chemical: timolol; Chemical: timolol; Chemical: timolol; Disease: glaucoma