A subjective optometry apparatus adapted to subjectively measure an eye refractive power of a subject eye, the subjective optometry apparatus comprising: a light projecting optical system configured to project a visual target luminous flux toward the subject eye; subjective measurement means adapted for subjectively measuring the eye refractive power of the subject eye, the subjective measurement means including a calibration optical system that is disposed in an optical path of the light projecting optical system and is configured to change an optical characteristic of the visual target luminous flux; objective measurement means adapted for objectively measuring an eye refractive power of the subject eye, the objective measurement means including a measurement optical system configured to emit measurement light to a fundus of the subject eye and receive the measurement light reflected from the subject eye; controlling means adapted to control the objective measurement means to objectively measure the eye refractive power of the subject eye to acquire a first eye refractive power, wherein the controlling means is further adapted to control the objective measurement means to objectively measure the eye refractive power of the subject eye to acquire a second eye refractive power while the eye refractive power of the subject eye is subjectively measured by the subjective measurement means, characterised by: acquisition means configured to acquire adjustment information indicating a change in the eye refractive power of the subject eye during the subjective measurement based on the first eye refractive power and the second eye refractive power; and output means configured to output the adjustment information. a light projecting optical system configured to project a visual target luminous flux toward the subject eye; subjective measurement means adapted for subjectively measuring the eye refractive power of the subject eye, the subjective measurement means including a calibration optical system that is disposed in an optical path of the light projecting optical system and is configured to change an optical characteristic of the visual target luminous flux; objective measurement means adapted for objectively measuring an eye refractive power of the subject eye, the objective measurement means including a measurement optical system configured to emit measurement light to a fundus of the subject eye and receive the measurement light reflected from the subject eye; controlling means adapted to control the objective measurement means to objectively measure the eye refractive power of the subject eye to acquire a first eye refractive power, wherein the controlling means is further adapted to control the objective measurement means to objectively measure the eye refractive power of the subject eye to acquire a second eye refractive power while the eye refractive power of the subject eye is subjectively measured by the subjective measurement means, characterised by: acquisition means configured to acquire adjustment information indicating a change in the eye refractive power of the subject eye during the subjective measurement based on the first eye refractive power and the second eye refractive power; and output means configured to output the adjustment information. acquisition means configured to acquire adjustment information indicating a change in the eye refractive power of the subject eye during the subjective measurement based on the first eye refractive power and the second eye refractive power; and output means configured to output the adjustment information.