Ophthalmic apparatus, method of controlling same, and recording medium

A method of controlling an ophthalmic apparatus comprising:

• a light source;
• an illumination optical system including a slit that can be arranged at a position substantially conjugate optically to a fundus of a subject's eye and is configured to be movable in an optical axis direction in accordance with a state of the subject's eye, and configured to generate slit-shaped illumination light by irradiating light from the light source onto the slit;
• an optical scanner configured to deflect the illumination light to guide the illumination light to a fundus of the subject's eye;
• an imaging optical system configured to guide returning light of the illumination light from the fundus to an image sensor, the image sensor capturing a light receiving result on a light receiving surface corresponding to an illumination region of the illumination light on the fundus, the illumination region being moved by the optical scanner;
• and
• a controller configured to control a deflection angle of the illumination light of the optical scanner, wherein at least one of a relative position of the light source to the slit, or a relative orientation of the light source to the slit is configured to be changeable,
• the method comprising:
• a first output step of outputting a scanner position signal corresponding to a deflection angle of the illumination light by the optical scanner, and
• a light receiving result acquisition step of starting capturing light receiving result of the returning light in synchronization with the scanner position signal by the image sensor.

A non-transitory computer-readable recording medium storing a program of causing a computer to execute each step of a method of controlling an ophthalmic apparatus, wherein

• the ophthalmic apparatus comprises:
• a light source;
• an illumination optical system including a slit that can be arranged at a position substantially conjugate optically to a fundus of a subject's eye and is configured to be movable in an optical axis direction in accordance with a state of the subject's eye, and configured to generate slit-shaped illumination light by irradiating light from the light source onto the slit;
• an optical scanner configured to deflect the illumination light to guide the illumination light to a fundus of the subject's eye;
• an imaging optical system configured to guide returning light of the illumination light from the fundus to an image sensor, the image sensor capturing a light receiving result on a light receiving surface corresponding to an illumination region of the illumination light on the fundus, the illumination region being moved by the optical scanner;
• and
• a controller configured to control a deflection angle of the illumination light of the optical scanner, wherein
• at least one of a relative position of the light source to the slit, or a relative orientation of the light source to the slit is configured to be changeable, and
• the method of controlling the ophthalmic apparatus comprises:
• a first output step of outputting a scanner position signal corresponding to a deflection angle of the illumination light by the optical scanner, and
• a light receiving result acquisition step of starting capturing light receiving result of the returning light in synchronization with the scanner position signal by the image sensor.