JP2016158906A5 - - Google Patents

Claims (5)

An ocular axial length measuring device including an interference optical system that detects an interference signal between measurement light and reference light irradiated to a subject eye,
Measurement position changing means for changing the measurement position of the axial length on the eye to be examined;
Obtaining means for obtaining an axial length of the eye based on an interference signal from the interference optical system;
With
The acquisition unit acquires the axial length at a plurality of different measurement positions changed by the measurement position changing unit, and acquires the eyeball shape information of the eye to be examined based on the axial length at the plurality of measurement positions. An axial length measuring device characterized by that. The acquisition unit determines an eyeball shape type of the eye to be examined based on an axial length at the plurality of measurement positions, and acquires a determination result as eyeball shape information of the eye to be examined. Item 1. An axial length measuring device according to Item 1. The measurement position changing unit includes a scanning optical system that scans the measurement light with respect to the eye to be examined, and scans the measurement light with the pupil of the eye to be examined as a fulcrum to thereby adjust the axial length on the eye to be examined. The measuring position of the eye axis length is changed. An eyeball shape information acquisition method comprising:
An axial length acquisition step of acquiring the axial length measured at a plurality of different measurement positions on the same eye;
Based on the axial length obtained in the obtaining step, the shape information obtaining step for obtaining the eyeball shape information of the eye to be examined;
An eyeball shape information acquisition method comprising: An eyeball shape information acquisition program executed in a control device that controls the operation of the eyeball shape information acquisition device,
By being executed by the processor of the control device,
An axial length acquisition step of acquiring the axial length measured at a plurality of different measurement positions on the same eye;
Based on the axial length obtained in the obtaining step, the shape information obtaining step for obtaining the eyeball shape information of the eye to be examined;
Is executed by the eyeball shape information acquisition apparatus.