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Schiøtz tonometer is an indentation tonometer , used to measure the intraocular pressure ( IOP ) by measuring the depth produced on the surface of the cornea by a load of a known weight .
 person: Schiøtz
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Schiøtz 
Answer:
 person: Schiøtz