Abstract:
A method of processing an ophthalmic image includes: taking an image of an ophthalmic region involving an ophthalmic layer by an imaging system; constructing an image graph, comprising nodes connected by links and detected image data by an image processor; and performing a heuristic graph-search for a path on the image graph that corresponds to an image of the ophthalmic layer by assigning at least one of link-costs to links of the image graph and node-costs to nodes of the image graph; assigning heuristic-costs to at least one of the nodes and the links; creating extended paths by extending a selected path with extension links; determining path-costs of the extended paths by combining heuristic costs and at least one of link-costs and node-costs assigned to the extension-links; and selecting the extended path with the smallest path-cost.
Abstract:
Control of scanning images during ophthalmic surgery may be performed with a scanning controller that interfaces to an optical scanner used with a surgical microscope. A scan control device may receive user input, including hands-free user input, for controlling an overlay image of scanning data that is overlaid on optical image data viewed using the surgical microscope. A selected location for optical scanning may also be displayed and controlled using the scanning controller.
Abstract:
A method of automatically detecting a retinal feature using an ophthalmic imaging system can include: acquiring an optical coherence tomography (OCT) image of a retina; segmenting the OCT image; generating a metric based on the segmented OCT image; detecting the retinal feature based on the metric; and providing an indication of the detected retinal feature to a user. An ophthalmic imaging system can include: an OCT system configured to acquire an image of a retina; a computing device coupled to the OCT system and configured to segment the image, generate a metric based on the segmented image, and detect a retinal feature based on the metric; and an audio/visual/tactile device in communication with the computing device and configured to provide at least one of an audio, visual, and tactile indication of the detected retinal feature to a user.
Abstract:
The present disclosure provides a visualization system for performing optimized optical coherence tomography (OCT) by determining the absolute distance between the OCT source and a sample. The present disclosure also provides a method for optimizing OCT, which includes determining an absolute distance between the OCT source and a sample using data relating to the focal length or position of an autofocus imager lens.
Abstract:
En face or 3D volumetric OCT imaging during ophthalmic surgery may be performed with an OCT scanning controller that interfaces to an OCT scanner used with a surgical microscope. The OCT scanner may generate en face images before and after surgical operations, such as retinal membrane peeling, are performed. Using digital subtraction on the en face images, an overlay image indicative of the changes from the surgical operations to the eye may be generated and overlaid onto an optical image displayed to a user of the surgical microscope.
Abstract:
An epiretinal membrane (ERM) visualization system includes an OCT system operable to generate an OCT image of a region of a patient's eye, the region of the patient's eye including an ERM. The ERM visualization system further includes an image processing unit operable to process the OCT image to identify the ERM by differentiating the ERM from other structures within the region of the patient's eye and generate an ERM map depicting one or more characteristics (including at least a location of a portion of the ERM within the region of the patient's eye) of the identified ERM. The ERM visualization system further includes a display operable to display the ERM map.
Abstract:
An ophthalmic surgical microscope includes a beam coupler positioned along an optical path of the surgical microscope between a first eyepiece and magnifying/focusing optics, the beam coupler operable to direct the OCT imaging beam along a first portion of the optical path of the surgical microscope between the beam coupler and a patient's eye (an OCT image being generated based on a reflected portion of the OCT imaging beam). The surgical microscope additionally includes a real-time data projection unit operable to project the OCT image generated by the OCT system and a beam splitter positioned along the optical path of the surgical microscope between a second eyepiece and the magnifying/focusing optics. The beam splitter is operable to direct the projected OCT image along a second portion of the optical path of the surgical microscope between the beam splitter and the second eyepiece such that the projected OCT image is viewable through the second eyepiece.
Abstract:
An ophthalmic visualization system can include a computing device in communication with an OCT system configured to scan a surgical field to generate an OCT image. The computing device can be configured to determine locations within the surgical field corresponding to locations within the OCT image. The ophthalmic visualization system can also include an indicator mechanism in communication with the computing device and a surgical microscope configured to image the surgical field. The indicator mechanism can be configured to cause a location indicator to be positioned within a field of view of the surgical microscope. The location indicator can graphically represent the locations within the surgical field corresponding to the locations within the OCT image.
Abstract:
Apparatuses, systems, and methods for treating tissue abnormalities are disclosed. The tissue may be visualized for determining a presence of one or more abnormalities contained therein. Imaging data obtained by visualization may be used to determine the presence of one or more abnormalities. Each of the detected abnormalities may be identified and a treatment plan developed for treating the abnormalities. Treatment may be delivered to the abnormalities according to the treatment plan.
Abstract:
A system and method for using optical coherence tomography (OCT) to image both the vitreous and the retina in the eye. The image of both tissues may be created sequentially, simultaneously, or near-simultaneously from at least one OCT image.