To provide a subjective optometric apparatus capable of preventing rewriting, deletion or displacement of the display in a necessary reference window when refraction data displayed in a main data window is changed with other data.

The subjective optometric apparatus has a display window setting means for setting any one of a plurality of reference windows Sw1, Sw2, Sw1a and Sw2a to display start data on. As the display window setting means is set as a part of an optometric program, the graphic display is omitted. A control part 11 can save or display the start data displayed in a main window Mw by the operation of a data switching button Dsb, a display switching means, in the set reference window (one of the reference windows Sw1, Sw2, Sw1a, or Sw2a).

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