In this study, we used the microscope-integrated intraoperative optical coherence tomography (OPMI Lumera 700 and RESCAN 700, Carl Zeiss, Meditec, AG, Jena, Germany). This system has an optical coherence tomography (OCT) system integrated with the microscope and gives a live heads-up display to the surgeon on the right ocular of the microscope as well as an external video display. The surgeon can shift the point of focus of OCT with the foot pedal control in this system during surgery. An external assistant control of OCT is possible. RESCAN 700 works at a wavelength of 840 nm and captures 27,000 A-scans per second. It provides an axial resolution of 5 µm.
Opmi lumera 700
Manufactured by Zeiss
Sourced in Germany
The OPMI Lumera 700 is a surgical microscope designed for use in ophthalmology procedures. It features a high-performance illumination system and advanced optics to provide clear and detailed visualization of the surgical field.
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9 protocols using opmi lumera 700
1
Microscope-Integrated Intraoperative OCT
2
Measuring IOL-Posterior Capsule Distance
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An operating microscope integrated with OCT system (OPMI LUMERA 700 and RESCAN 700; Carl Zeiss, Jena, Germany) was used to measure the distance between the IOL and the posterior capsule. This is a spectral domain OCT, which works at a wavelength of 840 nm. It acquires 27,000 A-scans per second, with an axial resolution of 5.5 μm and an A-scan depth of 2000 μm.
The OCT does not have measuring calipers to allow for direct measurement from the screen. The measurements were obtained by a method reported in a study published earlier from our center.11 (link) A 9-mm cube was acquired for analysis. From the OCT scan displayed on the screen, a ruler was used to measure the distance between the posterior capsule and the IOL. Measured readings in millimeters were converted into microns.
The OCT does not have measuring calipers to allow for direct measurement from the screen. The measurements were obtained by a method reported in a study published earlier from our center.11 (link) A 9-mm cube was acquired for analysis. From the OCT scan displayed on the screen, a ruler was used to measure the distance between the posterior capsule and the IOL. Measured readings in millimeters were converted into microns.
3
Corneal Delamination for Bubble Creation
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Following FSL incision, the cornea was viewed under a surgical microscope (OPMI Lumera 700, Carl Zeiss, DE) and the anterior stromal lamella was removed. Fogla’s cannula was gently inserted bevel down into the end of the tunnel plane 1 incision and the entire length of plane 2. When the inner end of the tunnel was reached, the tip of the cannula was carefully advanced to find the plane of minimum resistance and delaminate it. Air was then gently introduced with a 5-mL syringe to create a BB. A single surgeon (E.P.) performed all dissections.
4
Real-time OCT Imaging of Porcine Vessels
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Real-time OCT imaging was performed using a microscope-integrated spectral domain OCT (Zeiss Opmi Lumera 700 and Zeiss Rescan 700; Carl Zeiss Meditec, Jena, Germany) in the porcine cadaver eyes. After three-port core vitrectomy had been performed, the process of piercing the vessel with the needle and the cannulation of the internal wire was recorded.
5
Intraoperative Retinal Surgery Video Analysis
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Our data are derived from an internal Moorfields Eye Hospital database of vitreoretinal surgery videos, including intra-operative and pre-operative OCTs. We use a data-complete subset comprising 42 intra-operative retinal surgery videos acquired from 22 subjects. The data contain the surgical microscope view captured by a Zeiss OPMI LUMERA 700 with embedded LR iOCT frames (resolution of ) acquired by RESCAN 700 (see Fig. 1 ). These intra-operative sequences are used to generate HR iOCT images ( ), which are the target domain for the examined super-resolution models.![]()
6
Integrated Microscope with iOCT for Surgical Assessment
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An integrated microscope with iOCT (OPMI Lumera 700 and RESCAN 700; Carl Zeiss Meditec AG) was used to assess the morphology of lens opacity and the posterior capsular status just after general anesthesia with tracheal intubation during surgery. The RESCAN 700 provides real-time 3D OCT images of the ocular structures that are projected onto the surgical field and directly viewed through the oculars of the microscope by the operating surgeon. In addition, the high-definition OCT images are also displayed on the attached Callisto Eye monitor, which enhances the features of the OCT images and performs a detailed real-time analysis. iOCT was used to assess the morphology of lens opacity, the relation of the opacity to the PC, and the integrity and continuity of the PC.
7
Intraoperative Imaging of Dural Membrane Detachment
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The operating microscope (Opmi Lumera 700; Carl Zeiss Meditec) parameters were as follows: 65% light intensity and magnification of ×7.5. An iOCT system (Zeiss Rescan 700; Carl Zeiss Meditec) was connected to the operating microscope to obtain real-time, intraoperative scanning results at a scanning mode of 5 lines, a spacing of 0.75 mm, and a size of 6 mm. Sectional images at each of the 5 scanning lines were simultaneously obtained in 1 scan at a scanning depth of approximately 2.0 mm. The 5 scanning lines were adjusted during each procedure so that they were evenly distributed and perpendicular to the incision. A screenshot was taken and saved when the sectional view of the longest DMD throughout the procedure was located at the third (central) scan line (eFigure 1 in the Supplement ). The positions of DMD that occurred at the incision were classified as anterior lip (eFigure 2 in the Supplement ), posterior lip (eFigure 2 in the Supplement ), or both.
8
Heads-up NGENUITY 3-D Visualization System
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Prospective, randomized, cross-sectional, and comparative study of the heads-up NGENUITY 3-D® Visualization System (Alcon Laboratories, USA) and a conventional microscope (OPMI LUMERA 700; Carl Zeiss Meditec, Germany).
9
High-Definition Video Capture for Cataract Surgery
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All cataract surgeries were performed with an ophthalmic surgical microscope (OPMI Lumera 700, Zeiss, Oberkochen, Germany), and high-definition video taken with the built-in 3CCD camera was output via an serial digital interface (SDI) cable. It was converted to an HDMI signal by converter 1 (Mini Converter-SDI to HDMI 6G, Blackmagicdesign, Melbourne, Australia). The HDMI signal was converted to USB by a video converter 2 (AVT-C878, AVerMedia Technologies Inc, New Taipei City, Taiwan) and input to a GPU for analysis (ELSA GeForce RTX 2070 S. A. C, ELSA Japan, Tokyo, Japan). For analysis video recording, the monitor image output from the GPU machine as a digital visual interface signal was converted to an HDMI signal via a conversion cable, and then output via USB with the above-mentioned video converter 2 for screen capture laptop computer (YOGA 720, Lenovo, Morrisville, USA) and Snipping Tool (Windows10, Microsoft, Albuquerque, USA) was used to record screen [Figure 1 ].
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