PROBLEM TO BE SOLVED: To enable, in providing a measuring environment structuring agent for corrective use that gives known optical environments to the tip of a probe when conducting measurement for a corrective purpose, a single measuring environment structuring agent for corrective use to reliably and skillfully give a plurality of types of known optical environments by simple operation and thereby to achieve precise correction.SOLUTION: A measuring environment structuring agent for corrective use 60 (70 or 80) having an internal space that gives the tip 11 of a probe inserted through an opening 66 known mutually different optical environments provides the tip placed in one optical environment in the internal space with another different optical environment along with the shift of the tip or of a component (72) in the inserting direction of the tip, with the result that a partitioning member 64 (74 or 84) opposing the tip is opened to develop the other different optical environment.
