OPHTHALMOLOGIC APPARATUS AND OPHTHALMOLOGIC INFORMATION PROCESSING APPARATUS

• Main Authors: HIROSE RYOICHI, NAKANISHI MICHIKO, YAMAGUCHI TATSUO
• Format: Patent
• Language: English; Japanese
• Published: 19.09.2019
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

To provide an ophthalmologic apparatus, etc. capable of highly accurately correcting distortions of a tomographic image of a subject eye.SOLUTION: The ophthalmologic apparatus comprises an optical scanner, an interference optical system, an image formation unit, an intraocular distance calculation unit, an image correction unit, and a control unit. The optical scanner is disposed at a position optically substantially conjugate with a first site of a subject eye. The interference optical system splits light from a light source into reference light and measurement light, projects the measurement light onto the subject eye through the optical scanner, and detects interference light of return light of the measurement light from the subject eye with the reference light through the optical scanner. The image formation unit forms a tomographic image of the subject eye which corresponds to a first traveling direction of the measurement light deflected by the optical scanner on the basis of a result of detection of the interference light. The intraocular distance calculation unit determines the intraocular distance between predetermined sites in the subject eye on the basis of the result of detection of the interference light. The image correction unit corrects the tomographic image on the basis of the intraocular distance. The control unit controls at least the optical scanner.SELECTED DRAWING: Figure 1 【課題】被検眼の断層像の歪みを高精度に補正することが可能な眼科装置等を提供する。【解決手段】眼科装置は、光スキャナと、干渉光学系と、画像形成部と、眼内距離算出部と、画像補正部と、制御部とを含む。光スキャナは、被検眼における第１部位と光学的に略共役な位置に配置される。干渉光学系は、光源からの光を参照光と測定光とに分割し、光スキャナを介して測定光を被検眼に照射し、被検眼からの測定光の戻り光と参照光との干渉光を光スキャナを介して検出する。画像形成部は、干渉光の検出結果に基づいて、光スキャナにより偏向された測定光の第１進行方向に対応した被検眼の断層像を形成する。眼内距離算出部は、干渉光の検出結果に基づいて被検眼における所定の部位間の眼内距離を求める。画像補正部は、眼内距離に基づいて断層像を補正する。制御部は、少なくとも光スキャナを制御する。【選択図】図１