Nidek Co., Ltd.

Junpei Nishiyama

Yukihiro Higuchi

Ryosuke Shiba

Shinya Iwata

Hirofumi Yogo

Hideki Aono

Seigo Ueda

Hajimi Namiki

Natsuru Misaki

Provided are ophthalmologic image processing method, including an acquisition step of acquiring OCT data of an eye to be examined based on a spectral interference signal output from an OCT optical system, a setting step of setting a depth region including an image position of a tissue as an extraction region for data on one-direction side from a zero delay position in the OCT data, and a display control step of extracting extracted OCT data corresponding to the extraction region from the OCT data and displaying the extracted OCT data in a display region set in advance on a monitor, and an OCT apparatus that executes the method.

Ophthalmologic image processing method and OCT apparatus

An optical tomography apparatus has a measurement unit that divides light output from a light source into measurement light and reference light, that repeatedly scans a subject with the measurement light, and that causes a detector to detect interference between reflected light of the measurement light and the reference light, and a processor. The processor performs an acquisition process of are temporally sequentially acquiring tomographic images at the same transverse position in the subject based on a signal output from the detector. The processor performs a video image generation process of generating a synthetic image on a real time basis by synthesizing a new tomographic image frequently and one or more past images, and causing a monitor to display a real time video image formed from the synthetic image.

Optical tomography apparatus

An optical tomographic imaging device configured to acquire a tomographic image of a tissue of an object, includes: a dividing device configured to divide a light beam emitted from a light source into measurement light and reference light; a combining device configured to combine the measurement light, which is separated by the dividing device and is reflected from the tissue, with the reference light so as to generate interference light for acquiring the tomographic image; a plurality of irradiation devices, each of the plurality of irradiation devices being configured to guide the measurement light and irradiate the tissue with the measurement light: and a switching device configured to switch the plurality of irradiation devices from one to another and select one of the plurality of irradiation devices to cause the selected irradiation device to irradiate the measurement light output from the dividing device with tissue.

Optical tomographic imaging device

An optical tomographic image photographing apparatus for acquiring information on a tissue inside a specimen, the apparatus includes: a synthesis unit configured to generate a interference beam by synthesizing a measuring beam reflected from the tissue and a reference beam; and a detector configured to detect the generated first interference beam as a first interference signal, the first interference beam being detected for each scanning position of the measuring beam. The optical tomographic image photographing apparatus acquires tomographic information for each scanning position of the specimen by using the detected first interference signal and acquiring tomographic image data of the specimen expressed by polar coordinates by using the tomographic information; and converts the tomographic image data of the specimen expressed by the acquired polar coordinates into image data expressed by rectangular coordinates.

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Gamagori, Japan

Junpei Nishiyama