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This has led to the ' biomechanical theory ' of glaucoma , which posits that the behavior of optic nerve head connective tissues ( specifically within the peripapillary sclera and lamina cribrosa ) in response to intraocular pressure ( regardless of its magnitude ) can directly and indirectly influence the physiology and pathophysiology of the optic nerve head .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None