Nidek Co., Ltd.

Mitsubishi Materials Electronic Chemicals Co., Ltd.

Ai Takaya

Norimasa Satake

Yukihiro Higuchi

Naoki Takeno

Yuki Kuno

Ryosuke Shiba

Yasuhiro Furuuchi

Tetsuya Kano

Hajime Namiki

Takeshi Nakagawa

Kazuki Tazaki

An OCT device includes an OCT optical system and a controller that also serves as an image processor. The controller acquires the OCT data of the fundus by processing the spectral interference signal output from the OCT optical system. In addition, the controller adjusts the position of the high accuracy region, which is the depth region where relatively high accuracy OCT data is obtained, by controlling the OCT optical system in accordance with the curvature level of the fundus image in the photographing range of the OCT data. This makes it possible to acquire good OCT data regardless of the curvature level of the fundus.

OCT device

An ophthalmic analysis device for analyzing OCT motion contrast data including blood vessel information of a subject eye acquired by an ophthalmic OCT, includes: a processor; and memory storing computer readable program, when executed by the processor, causing the ophthalmic analysis device to execute: an analysis process of analyzing the OCT motion contrast data to acquire a measurement result related to a capillary area of the subject eye. The analysis process executes an alleviating process for alleviating the influence of great blood vessels having blood vessel diameters larger than those of capillaries on the measurement result to acquire the measurement result related to the capillary area.

Ophthalmic analysis device and ophthalmic analysis program

An OCT signal processing apparatus includes: a OCT signal receiver configured to receive a plurality of OCT signals detected by an OCT device based on measurement light radiated to a test substance and reference light; a display; a controller configured to: processes the plurality of OCT signals received by the OCT signal receiver to obtain 3-dimensional motion contrast data; extract depth region data from the 3-dimensional motion contrast data, the depth region data representing motion contrast data in a depth region of a part of the test substance; and display, on the display, a confirmation screen including the motion contrast image based on the depth region data to confirm quality of 3-dimensional motion contrast data obtained by processing the plurality of OCT signals which are temporally different from each other in the same region of the test substance.

Signal processing for an optical coherence tomography (OCT) apparatus

An ophthalmic imaging device that captures an image of a test eye, the device includes: an OCT optical system configured to acquire an OCT signal by scanning a tissue of the test eye with measurement light, the ophthalmic imaging device configured to execute: receiving a designation of a wide area which is wider than a unit area which is an acquisition unit for acquiring motion contrast data indicating a motion of the tissue; acquiring a plurality of OCT signals for the same position at different timing in each of a plurality of unit areas, the plurality of unit areas being positioned in the designated wide area and being not completely overlapped with each other; and acquiring the motion contrast data of each of the plurality of unit areas by processing the plurality of OCT signals acquired for the same position.

Ophthalmic imaging device and ophthalmic imaging program

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Hamamatsu, Japan

Ai Takaya