Abstract: A tomographic image processing device includes a tomographic image acquisition unit that acquires a plurality of tomographic images including an anterior chamber angle, the tomographic images being obtained by radial scan with a substantially conical vertex as a center; an analysis unit that obtains an analysis value related to the anterior chamber angle from each of the plurality of tomographic images; and a display processing unit that causes a display unit to display information regarding each analysis value obtained from each of the plurality of tomographic images in association with a rotation angle in the radial scan at which the anterior chamber angle corresponding to the analysis value is obtained.

Abstract: An ophthalmic apparatus that may include a processor; and a memory storing computer-readable instructions therein, the computer-readable instructions, when executed by the processor, causing the ophthalmic apparatus to perform: acquiring a two-dimensional tomographic image of the subjected eye; calculating a preoperative shape of the subjected eye based on a preoperative two-dimensional tomographic image of a preoperative subjected eye acquired by the acquiring of the two-dimensional tomographic image; calculating a postoperative shape of the subjected eye based on a postoperative two-dimensional tomographic image of a postoperative subjected eye acquired by the acquiring of the two-dimensional tomographic image; and calculating a displacement amount between a first reference axis obtained from the preoperative two-dimensional tomographic image of the preoperative subjected eye and a second reference axis obtained from the postoperative two-dimensional tomographic image of the postoperative subjected eye, bas

Abstract: An anterior eye tomographic image capturing apparatus determining a power of an IOL (intraocular lens) is configured to acquire a tomographic image of an anterior eye along a straight line passing through a corneal apex of the anterior eye; identify a corneal apex position of the anterior eye, an equator position of a crystalline lens of the anterior eye, and a SS (scleral spur) position of the anterior eye based on the tomographic image; calculate an ELP (estimated lens position) based on a first distance from the corneal apex position to the SS position in a direction of a visual axis and a second distance from the SS position to the equator position in the direction of the visual axis; and determine the power of the IOL by using the ELP.

Abstract: An ophthalmic apparatus that may include a processor; and a memory storing computer-readable instructions therein, the computer-readable instructions, when executed by the processor, causing the ophthalmic apparatus to perform: acquiring a two-dimensional tomographic image of the subjected eye; calculating a preoperative shape of the subjected eye based on a preoperative two-dimensional tomographic image of a preoperative subjected eye acquired by the acquiring of the two-dimensional tomographic image; calculating a postoperative shape of the subjected eye based on a postoperative two-dimensional tomographic image of a postoperative subjected eye acquired by the acquiring of the two-dimensional tomographic image; and calculating a displacement amount between a first reference axis obtained from the preoperative two-dimensional tomographic image of the preoperative subjected eye and a second reference axis obtained from the postoperative two-dimensional tomographic image of the postoperative subjected eye, bas

Abstract: An anterior ocular segment optical coherence tomographic imaging device and an anterior ocular segment optical coherence tomographic imaging method that can accurately analyze the shape of a crystalline lens by identifying the boundary of each layer of the crystalline lens in a tomographic image of an anterior ocular segment of a subject's eye, which is taken by optical coherence tomography. A layer boundary detector calculates brightness gradients from brightness values in a tomographic image of an anterior ocular segment of a subject's eye, which is taken by optical coherence tomography, in a depth direction of the tomographic image from a cornea to a retina, detect edges b1, b2, b3, and b4 that are larger than a predetermined threshold, and identify a boundary of each layer of the crystalline lens L from positions of the edge b1, b2, b3, and b4.

Abstract: An anterior eye tomographic image capturing apparatus determining a power of an IOL (intraocular lens) is configured to acquire a tomographic image of an anterior eye along a straight line passing through a corneal apex of the anterior eye; identify a corneal apex position of the anterior eye, an equator position of a crystalline lens of the anterior eye, and a SS (scleral spur) position of the anterior eye based on the tomographic image; calculate an ELP (estimated lens position) based on a first distance from the corneal apex position to the SS position in a direction of a visual axis and a second distance from the SS position to the equator position in the direction of the visual axis; and determine the power of the IOL by using the ELP.

Abstract: An anterior ocular segment optical coherence tomographic imaging device and an anterior ocular segment optical coherence tomographic imaging method that can accurately analyze the shape of a crystalline lens by identifying the boundary of each layer of the crystalline lens in a tomographic image of an anterior ocular segment of a subject's eye, which is taken by optical coherence tomography. A layer boundary detector calculates brightness gradients from brightness values in a tomographic image of an anterior ocular segment of a subject's eye, which is taken by optical coherence tomography, in a depth direction of the tomographic image from a cornea to a retina, detect edges b1, b2, b3, and b4 that are larger than a predetermined threshold, and identify a boundary of each layer of the crystalline lens L from positions of the edge b1, b2, b3, and b4.