Subjective optometric apparatus

A subjective optometric apparatus comprising:

• a projection optical system that has a target presenting unit configured to emit a target light flux and configured to project, onto an examinee's eye, the target light flux emitted from the target presenting unit;
• a housing that accommodates the projection optical system;
• a presentation window configured to project the target light flux onto the examinee's eye by transmitting the target light flux emitted from the projection optical system and outputting the target light flux from an inside of the housing to an outside of the housing;
• an eye refractivity measuring unit configured to change an optical property of the target light flux output from the inside of the housing to the outside of the housing and that includes a pair of right and left lens chamber units that dispose optical elements in a test window in a switchable manner;
• a cornea position alignment optical system that is disposed in the eye refractivity measuring unit and is used to check an inter-vertex distance between a lens wearing reference position and a cornea vertex of the examinee's eye;
• a checking window for checking the cornea position alignment optical system disposed outside of the eye refractivity measuring unit;
• and
• a light guiding unit configured to observe the checking window;
• and
• wherein the eye refractivity measuring unit is disposed outside of the housing facing the presentation window and the housing comprises an observation window or an imaging device that permits observation by an examiner of a positional relationship between the examinee's eye and the eye refractivity measuring unit.