Nidek Co., Ltd.

Sasagu Tachibana

Masaaki Hanebuchi

Michihiro Takii

Keiji Murata

Hisashi Ochi

Yusuke Ando

An OCT apparatus includes an OCT optical system guiding measurement light to a region including a central portion and a peripheral portion of a fundus, and an image processor processing a spectral interference signal output from the OCT optical system to acquire OCT data of an examinee's eye. The OCT optical system includes a first reference optical path having a path length for obtaining OCT data including the central portion and a second reference optical path having a path length for obtaining OCT data including the peripheral portion. The image processor obtains OCT data including the central portion based on an interference signal between measurement light guided to the central portion and reference light from the first reference optical path, and obtains OCT data including the peripheral portion based on an interference signal between measurement light guided to the peripheral portion and reference light from the second reference optical path.

OCT apparatus

A subjective optometry apparatus includes a light projecting optical system that projects a target light flux to an examinee's eye, a fixed optical element that guides an image of the target light flux to the examinee's eye so as to have an optically predetermined examination length, a calibration optical system disposed in an optical path of the light projecting optical system to change optical characteristics of the examinee's eye, a measurement unit that accommodates the light projecting optical system; a positional information acquiring portion that acquires positional information of the measurement unit, a correction amount setting portion that sets a correction amount for correcting a projection magnification of the target light flux projected to the examinee's eye, based on the positional information, and a correction portion that corrects the projection magnification of the target light flux based on the correction amount set by the correction amount setting portion.

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Aichi, Japan

Sasagu Tachibana