PROBLEM TO BE SOLVED: To provide an image analysis apparatus and an image analysis method capable of smoothly and highly accurately analyzing a ring image, and also to provide an ophthalmologic apparatus including the image analysis apparatus.SOLUTION: The image analysis apparatus comprises: a first position detection unit for detecting a position of a ring image at a plurality of first positions of the ring image and obtaining a detection point for each first position； an image quality detection unit for detecting the image quality of the ring image； an increase determination unit for determining whether or not to increase the number of detection points on the basis of the detection result of the image quality detection unit； a second position detection unit which, when the increase determination unit determines that the number of detection points is to be increased, detects a position of the ring image at a plurality of second positions of the ring image and obtains a detection point for each second position； an ellipse approximation unit which, when the increase determination unit determines that the number of detection points is to be increased, sets an approximate ellipse for the detection points detected by both the first position detection unit and the second position detection unit, and when the increase determination unit determines that the number of detection points is not to be increased, sets an approximate ellipse for the detection point detected by the first position detection unit.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】リング像の解析をスムーズ且つ精度良く行うことができる画像解析装置及び画像解析方法と、この画像解析装置を備える眼科装置とを提供する。【解決手段】リング像の複数の第１位置でリング像の位置を検出して、第１位置ごとの検出点を得る第１位置検出部と、リング像の画質を検出する画質検出部と、画質検出部の検出結果に基づき、検出点の数を増加させるか否かを決定する増加決定部と、増加決定部が検出点の数の増加を決定した場合に、リング像の複数の第２位置でリング像の位置を検出して、第２位置ごとの検出点を得る第２位置検出部と、増加決定部が検出点の数の増加を決定した場合に、第１位置検出部及び第２位置検出部の双方が検出した検出点に対して近似楕円を設定し、且つ増加決定部が増加を否と決定した場合に第１位置検出部が検出した検出点に対して近似楕円を設定する楕円近似部と、を備える。【選択図】図３
