Ophthalmologic apparatus

An ophthalmologic apparatus comprising:

• an objective measurement optical system that measures an objective refraction characteristic of a subject eye;
• and a control portion that performs total control including control of the objective measurement optical system, wherein the control portion analyzes a characteristic amount of a ring image obtained by measuring the objective refraction characteristic of the subject eye to feedback to a subjective examination content of the subject eye according to an analysis result of the characteristic amount of the ring image, and wherein the control portion performs subjective examination with a previously determined automatic optometry algorithm upon determination that the analysis result of the characteristic amount of the ring image includes no feedback, and changes the automatic optometry algorithm to a content in which the analysis result of the characteristic amount of the ring image is reflected upon determination that the analysis result of the characteristic amount of the ring image includes feedback, wherein a determination of no feedback results from the analysis result of the characteristic amount of the ring image determining that the subject eye has a low probability of ametropia in the subject eye in an extent to cause an error in automatic subjective examination, and wherein a determination of feedback results from the analysis result of the characteristic amount of the ring image determining that the subject eye has a high probability of ametropia in the subject eye in the extent to cause the error in automatic subjective examination.