Abstract: Methods and systems for facilitating or improving line scan alignment in a scanning laser ophthalmoscope (SLO) use one or more optical markers located or positioned on a region of an optical element implemented in the SLO device. The optical marker has a predetermined shape and size that assists in detecting any misalignment and/or realigning of the scanned data (such as the line scan) so as to improve the accuracy or integrity of a final scan of a patient's eye.

Abstract: An imaging system for generating an image of a region of an eye, comprising: an ocular imaging device controlled by a control module to acquire, from a first viewpoint, a first ocular image of the region having an image artefact caused by obstruction from imaging of a part of the region by an object, and a second ocular image from a predetermined second viewpoint, which shows at least a portion of the part of the region that was obstructed from imaging during acquisition of the first ocular image; and an image data processing module for combining the first and second ocular images to generate an enhanced ocular image having an image artefact caused by obstruction from imaging by the object which is smaller in relation to the image artefact in the first or second ocular image, or no such image artefact.

Abstract: An ophthalmic scanning system includes a first imaging modality, a second imaging modality different from the first imaging modality, and a control system that maps the first imaging modality to the second imaging modality by compensating for at least one of an optical-mechanical and an electro-mechanical projection difference between the first and second imaging modalities. The control system provides a scan location for the second imaging modality based on a scan location of the first imaging modality.

Abstract: An ophthalmic scanning system includes a first imaging modality, a second imaging modality different from the first imaging modality, and a control system that maps the first imaging modality to the second imaging modality by compensating for at least one of an optical-mechanical and an electro-mechanical projection difference between the first and second imaging modalities. The control system provides a scan location for the second imaging modality based on a scan location of the first imaging modality.

Abstract: An imaging system for generating an image of a region of an eye, comprising: an ocular imaging device controlled by a control module to acquire, from a first viewpoint, a first ocular image of the region having an image artefact caused by obstruction from imaging of a part of the region by an object, and a second ocular image from a predetermined second viewpoint, which shows at least a portion of the part of the region that was obstructed from imaging during acquisition of the first ocular image; and an image data processing module for combining the first and second ocular images to generate an enhanced ocular image having an image artefact caused by obstruction from imaging by the object which is smaller in relation to the image artefact in the first or second ocular image, or no such image artefact.

Abstract: A method of generating a look-up table, LUT, for constructing a dewarped B-scan image from A-scans of a cropped part of a sequence of acquired OCT A-scans, the LUT associating each of a plurality of pixel arrays that are to form the dewarped B-scan image with a respective A-scan in the cropped part. The method comprises: using an indication of a spatial distribution of scan locations of A-scans to determine a dewarp function for selecting, from among acquired A-scans, A-scans having uniformly spaced scan locations; using the function and cropping information, in accordance with which the cropped part is cropped from the acquired sequence, to select, for each array, a respective A-scan from the sequence such that A-scans are selected from the cropped part and have uniformly spaced scan locations; and storing, for each array, a respective pixel array identifier in association with a respective identifier of the selected A-scan.

Abstract: A method of generating a look-up table, LUT, for constructing a dewarped B-scan image from A-scans of a cropped part of a sequence of acquired OCT A-scans, the LUT associating each of a plurality of pixel arrays that are to form the dewarped B-scan image with a respective A-scan in the cropped part. The method comprises: using an indication of a spatial distribution of scan locations of A-scans to determine a dewarp function for selecting, from among acquired A-scans, A-scans having uniformly spaced scan locations; using the function and cropping information, in accordance with which the cropped part is cropped from the acquired sequence, to select, for each array, a respective A-scan from the sequence such that A-scans are selected from the cropped part and have uniformly spaced scan locations; and storing, for each array, a respective pixel array identifier in association with a respective identifier of the selected A-scan.

Abstract: A seal assembly is for a spherical plain bearing with an inner ring mounted on a shaft and an outer ring disposed about the inner ring and having a concave inner surface slidably displaceable against the inner ring convex outer surface. The seal assembly includes an annular inner member disposed about the shaft axially adjacent to the bearing inner ring and having opposing first and second axial ends and an outer engagement surface extending axially between the first and second ends. A generally annular outer member has a base portion coupled with the bearing outer ring and a lip portion extending radially inwardly from the base portion and having an outer end sealingly engageable with the outer engagement surface of the seal inner member. The lip portion slidably displaces generally axially along the inner member engagement surface when the outer ring displaces axially relative to the inner ring.