Kabushiki Kaisha Topcon

Topcon Corporation

Ryota Ishiai

Kanichi Tokuda

Shigeru Okikawa

Masaki Nakano

Kota Fujii

An ophthalmic imaging apparatus of an embodiment scans a subject's eye with OCT to acquire a cross sectional image. A measurement unit performs OCT. An imaging unit acquires a moving image of the subject's eye. A display controller controls a display device to display the moving image acquired by the imaging unit, and two or more scan pattern images corresponding to two or more scan lines representing scan positions and scan directions in the moving image and arranged such that at least two of the two or more scan pattern images intersect one another. An operation unit is used for changing a relative position between the two or more scan pattern images. A measurement controller controls the measurement unit to perform OCT based on the two or more scan lines corresponding to the two or more scan pattern images after the relative position have been changed.

Ophthalmic imaging apparatus

An ophthalmologic imaging apparatus includes a data acquisition unit and a controller. The data acquisition unit is configured to repeatedly acquire data by repeatedly scanning an eye using optical coherence tomography. The controller is configured to perform first control to adjust optical path length difference between a sample arm and a reference arm of an interference optical system for optical coherence tomography to place an image of the eye in a reference position in an image frame based on the data repeatedly acquired by the data acquisition unit. Further, the controller is configured to perform second control to change the optical path length difference so as to place the image of the eye in a new reference position in the image frame based on the data repeatedly acquired by the data acquisition unit. The apparatus can perform preparatory operations for OCT measurement of the subject's eye.

Ophthalmologic imaging apparatus and method for controlling the same

An ophthalmic apparatus capable of selectively performing a first imaging mode in which imaging of a subject's eye is performed in a first state where an attachment unit is not attached, and a second imaging mode in which imaging of the subject's eye is performed in a second state where the attachment unit is attached. The ophthalmic apparatus includes: an operation unit; an attachment state determination unit to determine whether or not the attachment unit is attached; a correspondence determination unit to determine whether or not the correspondence between the imaging mode designated by a use of the operation unit and an attachment state of the attachment unit obtained by the attachment state determination unit is appropriate; and a controller to perform control for prohibiting imaging in at least the designated imaging mode when the correspondence determination unit has determined that the correspondence is not appropriate.

Ophthalmic apparatus

The ophthalmological device of an embodiment includes an optical system for inspection, a display, a subject's eye position acquiring unit, and a control unit. The optical system for inspection includes a photographic optical system for photographing an eyeground of the subject's eye. The subject's eye position acquiring unit acquires a three-dimensional position of the subject's eye. The control unit acquires information on positional displacement of the optical system for inspection with respect to the subject's eye on the basis of the three-dimensional position to cause a screen of the display to display two alignment index images to be varied in position with respect to a reference position of alignment preset in the display in a pseudo manner, in accordance with the information on positional displacement.

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Tokyo, Japan

Ryota Ishiai