Abstract:
An auxiliary surgical field visualization system is described, which includes an auxiliary surgical field camera, configured for acquiring an image of a field of view of a secondary surgical field, wherein the secondary surgical field includes the exterior of a patient's eye undergoing vitreoretinal surgery. The auxiliary surgical field visualization system also includes a display in electronic communication with the auxiliary surgical field camera, wherein the display is configured for receiving, from the auxiliary surgical field camera, a signal that includes the image of the field of view of the secondary surgical field, and upon receiving the signal, displaying the image of the field of view of the secondary surgical field.
Abstract:
An ophthalmic imaging system comprises a first imaging subsystem, a sensor array and a second imaging subsystem. The first imaging subsystem forms a primary image of the interior of an eye through the diameter of the eye pupil. The second imaging subsystem comprises a lens array to form an array of secondary images on the sensor array. The lens array is composed of a plurality of types of lenses, each type having a different optical power.
Abstract:
A method of imaging an eye visualised using an ophthalmic instrument is provided. The method includes the steps of illuminating an eye using one or more light sources; capturing a first image of the illuminated eye using a first camera; capturing a second image of the illuminated eye visualised using a second camera; and generating an image of the eye using the first image and the second image. Associated devices and systems are also provided.
Abstract:
Die Erfindung betrifft ein Verfahren zur Korrektur einer Abbildung, die auf einer Untersuchung eines Targets (900) mit einem Untersuchungsstrahl einer Vorrichtung für die optische Kohärenztomographie basiert, wobei sich die optische Weglänge und/oder die Polarisation des Untersuchungsstrahls zum und/oder vom Target während der Erzeugung der Abbildung diskret oder kontinuierlich verändert. Die Erfindung betrifft weiterhin ein ophthalmologisches Untersuchungssystem und eine Korrektureinheit. Ihre Aufgabe ist es, ein Verfahren und entsprechende Systeme aufzuzeigen, mit denen in einem Untersuchungssystem, in der eine optische Weglänge und/oder eine Polarisation eines Untersuchungsstrahls zum Target veränderlich ist, eine nichtmodifizierte und also unverfälschte Abbildung (einer Struktur) eines Targets erzeugt werden kann. Diese Aufgabe wird gelöst durch ein Verfahren und entsprechende Systeme, in denen die bekannten oder gemessenen Änderungen zur Einstellung eines verstellbaren Korrekturelements oder aber zur direkten Korrektur der Abbildung bzw. der Bilddaten der Abbildung verwendet wird, derart, dass der Einfluss der Änderung der optischen Weglänge des Untersuchungsstrahls zum und/oder vom Target und/oder ihrer Polarisation auf die Abbildung ausgeglichen wird.
Abstract:
Methods and systems for anti-parallax correction of stereoscopic surgical images may employ a stereoscopic surgical microscope to generate overlay content as left and right digital images that are overlaid on respective left and right analog images from an objective field of view of the surgical microscope. The user may select a location-dependent feature in the overlay content and may select left or right for the anti-parallax correction.
Abstract:
Ophthalmic Ultrasound Bio-Microscope (UBM) apparatus for eye examinations of a human subject in a supine position and fixating the gaze of his examined eye on an illuminated overhead fixation target. The ophthalmic UBM apparatus has a vertical UBM examination centerline on which overhead fixation target is located therealong and a UBM scanner with a UBM probe directed towards an examined eye at a known spatial position with respect to the overhead fixation target for acquisition of UBM scans of fixated examined eyes.
Abstract:
A novel surgical lens system including a lens and a reflective element. The lens is placed on, or above, a cornea of an eye of a subject for enabling inspection of the eye. The reflective element is incorporated into the lens. The reflective element reflects a light beam toward the eye of the subject. The reflective element increases the divergence of the light beam, such that the divergence of the reflected light beam is larger than the divergence of the light beam. The light beam is emitted by a nor-invasive light source positioned externally to the eye.