Fundus imaging apparatus, method of controlling fundus imaging apparatus, and storage medium

Abstract

A fundus imaging apparatus comprising: position detection means for detecting a position of a pupil of an eye to be examined; wavefront detection means for detecting a wavefront of return light from the eye irradiated with light through an illumination optical system; correction means for correcting an aberration based on the detected wavefront; and determination means for determining a correction effective region of the correction means based on the detected position.

1 . A fundus imaging apparatus comprising:
 a position detection unit configured to detect a position of a pupil of an eye to be examined;   a wavefront detection unit configured to detect a wavefront of return light from the eye irradiated with light through an illumination optical system;   a correction unit configured to correct an aberration based on the detected wavefront;   a determination unit configured to determine a correction effective region which represents a partial region of said correction unit based on the detected position; and   a control unit configured to control said correction unit so as to drive the correction effective region of said correction unit based on the detected wavefront.   
     
     
         2 . (canceled) 
     
     
         3 . The apparatus according to  claim 1 , wherein said determination unit determines a position of said correction unit which corresponds to a shift of the eye relative to an optical axis of the illumination optical system to a substantially center position of the correction effective region. 
     
     
         4 . The apparatus according to  claim 1 , further comprising an observation unit configured to observe an anterior ocular segment of the eye,
 wherein said position detection unit detects the position based on an observation result obtained by said observation unit.   
     
     
         5 . The apparatus according to  claim 1 , wherein said position detection unit detects the position based on a position of the return light applied to a detection region of said wavefront detection unit. 
     
     
         6 . The apparatus according to  claim 1 , wherein said position detection unit further detects a pupil diameter of the eye. 
     
     
         7 . The apparatus according to  claim 6 , further comprising a light intensity control unit configured to control a light intensity of the illumination light based on the position detected by said position detection unit and the pupil diameter. 
     
     
         8 . The apparatus according to  claim 1 , wherein a size of the set correction effective region is fixed, and the apparatus further comprises a propagation unit configured to make light outside the correction effective region propagate to outside an effective diameter of the optical system. 
     
     
         9 . The apparatus according to  claim 1 , further comprising a generation unit configured to generate wavefront detection light for detecting the wavefront,
 wherein said wavefront detection unit detects the wavefront based on return light obtained by irradiating the eye with the wavefront detection light generated by said generation unit through the optical system.   
     
     
         10 . The apparatus according to  claim 1 , wherein a light beam diameter of the illumination light is larger than the pupil diameter of the eye, and the effective diameter of said wavefront detection unit and the effective diameter of said correction unit are larger than the light beam diameter of the illumination light. 
     
     
         11 . The apparatus according to  claim 1 , wherein said correction unit corrects light applied to the eye through the illumination optical system or an aberration of return light from the eye. 
     
     
         12 . A method of controlling a fundus imaging apparatus, the method comprising:
 a position detection step of detecting a position of a pupil of an eye to be examined;   a wavefront detection step of detecting a wavefront of return light from the eye irradiated with light through an illumination optical system;   a control step of controlling a correction unit configured to correct an aberration based on the detected wavefront; and   a determination step of determining a correction effective region which represents a partial region of the correction unit based on the detected position,   wherein in said control step, said correction unit is controlled so as to drive the correction effective region of said correction unit based on a detection result obtained in the wavefront detection step.   
     
     
         13 . A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute each step in a method of controlling a fundus imaging apparatus defined in  claim 12 .