673
Of 6 patients with irreversible visual impairment , 4 patients had diabetes mellitus , glaucoma and a history of heavy smoking .
 Disease: visual impairment; Disease: diabetes mellitus; 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:
 Disease: visual impairment; Disease: diabetes mellitus; Disease: glaucoma