Leica Science Lab - Tag : Ophthalmology https://www.leica-microsystems.com//science-lab/tag/tags/ophthalmology/show/Tag/ Article tagged with Ophthalmology en-US https://www.leica-microsystems.com/20180 Coherent Raman Scattering (CRS) White Confocal Chemical Basis for Alteration of an Intraocular Lens Using a Femtosecond Laser The chemical basis for the alteration of the refractive properties of an intraocular lens with a femtosecond laser was investigated. Three different microscope setups have been used for the study: Laser Induced Fluorescence (LIF) microscopy, Raman microscopy and coherent anti-Stokes Raman Scattering (CARS) microscopy. https://www.leica-microsystems.com//science-lab/chemical-basis-for-alteration-of-an-intraocular-lens-using-a-femtosecond-laser/ Sun, 27 May 2018 22:00:00 +0000 https://www.leica-microsystems.com/19538 Optical Coherence Tomography Microscope-Integrated OCT Feasibility and Utility With the EnFocus System in the DISCOVER Study This article published in the journal OSLI Retina discusses the findings of the latest phase of the DISCOVER study relating specifically to the EnFocus instrasurgical OCT system from Leica. One of the findings of this phase of the study was that “in membrane peeling procedures, intraoperative OCT findings were discordant from the surgeon's initial impression in seven of 20 cases (35%).” (Runkle, Sunil et al, 2017). https://www.leica-microsystems.com//science-lab/microscope-integrated-oct-feasibility-and-utility-with-the-enfocus-system-in-the-discover-study/ Thu, 22 Jun 2017 11:33:00 +0000 https://www.leica-microsystems.com/19158 Optical Coherence Tomography Surgical Microscopy How Intrasurgical OCT can Impact the Surgical Approach to Membrane Peeling When treating patients with vitreomacular traction (VMT), peeling of the inner limiting membrane (ILM) or an epiretinal membrane (ERM) is often indicated. Successful outcomes depend on precise surgical maneuvers as well as the surgeon’s experience in order to assess whether the entire membrane has been removed, as this is crucial for successful release of traction. Showing different steps of removing an ERM to resolve VMT, the following videos captured with EnFocus intrasurgical OCT demonstrate how visualization of the membrane can impact the surgical process of membrane peeling. https://www.leica-microsystems.com//science-lab/how-intrasurgical-oct-can-impact-the-surgical-approach-to-membrane-peeling/ Thu, 04 May 2017 07:12:00 +0000 Marie Stockton https://www.leica-microsystems.com/19022 Optical Coherence Tomography Surgical Microscopy What is OCT and how can it help ophthalmologists acquire high resolution information on ocular tissue? Optical Coherence Tomography (OCT) is a non-invasive, non-contact imaging modality used to visualize and monitor changes to the morphology of biological tissue. OCT employs low-coherence interferometry to create cross-sectional images that reveal sub-surface details of the tissues of interest. In the most common ophthalmic applications OCT systems use near-infrared light to generate high-resolution, volumetric images of tissue microstructures including the cornea, iris, crystalline lens, vitreous and retina. These images can enhance insight into pathological conditions such as glaucoma, age-related macular degeneration or diabetic retinopathy. https://www.leica-microsystems.com//science-lab/what-is-oct-and-how-can-it-help-ophthalmologists-acquire-high-resolution-information-on-ocular-tissue/ Thu, 01 Dec 2016 14:44:00 +0000 George Wildeman, PhD Hafeez Dhalla https://www.leica-microsystems.com/18978 Optical Coherence Tomography Surgical Microscopy How Intrasurgical OCT can Provide Additional Information During Ophthalmic DMEK Procedures Replacing diseased Descemet’s membrane with a donor graft is an especially delicate procedure. Accurate positioning and full adherence to the stroma are crucial for optimal patient outcomes. These videos illustrate how intrasurgical OCT can provide additional information during each stage of a DMEK procedure. https://www.leica-microsystems.com//science-lab/how-intrasurgical-oct-can-provide-additional-information-during-ophthalmic-dmek-procedures/ Thu, 01 Dec 2016 14:05:00 +0000 Marie Stockton https://www.leica-microsystems.com/18307 Surgical Microscopy "The excellent red reflex, combined with the IOL guidance system, makes it possible for me to work quickly and precisely during refractive procedures." Excellent red reflex as well as maximum accuracy throughout the entire procedure are required to meet these expectations. Dr. Ulrich Jung, Medical Director at the ARTEMIS eye clinic in Dillenburg, Germany, tested the Proveo 8 ophthalmological microscope from Leica Microsystems in combination with the positioning system IOLcompass Pro for intraocular lenses at his clinic. In this interview, Dr. Jung reports his experiences. https://www.leica-microsystems.com//science-lab/the-excellent-red-reflex-combined-with-the-iol-guidance-system-makes-it-possible-for-me-to-work-quickly-and-precisely-during-refractive-procedures/ Fri, 24 Jun 2016 11:40:00 +0000 Dr. med. Ulrich Jung, Dipl. oec.-troph. Anja Schué https://www.leica-microsystems.com/18309 Surgical Microscopy How to Manage Critical Points in Cataract or Refractive Surgery with IOL Positioning Software Successful refractive surgery is all about accuracy. The aim is to deliver minimal residual astigmatism so the patient can be glasses- free. Latest IOL Positioning Systems such as IOLcompass Pro deliver precise, dependable and dynamically optimized guidance information designed to minimize inaccuracy throughout the entire process. This comparison highlights the impact on a typical cataract surgery using toric IOLs. https://www.leica-microsystems.com//science-lab/how-to-manage-critical-points-in-cataract-or-refractive-surgery-with-iol-positioning-software/ Thu, 23 Jun 2016 16:44:00 +0000 Kerstin Pingel https://www.leica-microsystems.com/18211 Surgical Microscopy Cataract and Glaucoma Surgery with the Proveo 8 Ophthalmic Microscope These videos recorded during cataract and glaucoma surgery using Proveo 8 demonstrate how Dr. Ahmed benefits from continuous red reflex even during phaco, due to exclusive CoAx 4 coaxial illumination, and high resolution combined with depth of focus for a texture-rich view due to FusionOptics technology. https://www.leica-microsystems.com//science-lab/cataract-and-glaucoma-surgery-with-the-proveo-8-ophthalmic-microscope/ Wed, 08 Jun 2016 12:09:00 +0000 Dr. Ike Ahmed https://www.leica-microsystems.com/18077 Optical Coherence Tomography Surgical Microscopy Is iOCT the Next Paradigm Shift for Vitreoretinal Surgery? Intraoperative ocular coherence tomography (iOCT) is a useful asset when performing macular surgery and other vitreoretinal procedures. Considering the advantages it provides, iOCT may be the next paradigm shift in vitreoretinal surgery according to Justis P. Ehlers, MD. https://www.leica-microsystems.com//science-lab/is-ioct-the-next-paradigm-shift-for-vitreoretinal-surgery/ Thu, 02 Jun 2016 14:19:00 +0000 https://www.leica-microsystems.com/17780 Surgical Microscopy How a State-of-the-Art Microscope Helps to Optimize the Workflow in Cataract Surgery Typical ophthalmic procedures require specific levels of light, focus and magnification in each phase of surgery. Changing quickly between these settings is the prerequisite for an uninterrupted and smooth workflow where the surgeon can concentrate completely on his patient. The surgical microscope for ophthalmology Proveo 8 features a unique level of customization that allows to program complete surgical phases and single parameters. Dr. Devesh Varma is one of the first ophthalmologists having tested the Proveo 8 microscope. https://www.leica-microsystems.com//science-lab/how-a-state-of-the-art-microscope-helps-to-optimize-the-workflow-in-cataract-surgery/ Wed, 30 Mar 2016 12:51:00 +0000 Dr. Devesh Varma, Kerstin Pingel https://www.leica-microsystems.com/17545 Surgical Microscopy The Impact of a Stable Red Reflex and Enhanced Focus in Cataract Surgery In cataract surgery, ophthalmologists rely on the red reflex which provides ideal contrast to visualize the capsule, lens and anterior chamber structure. A new illumination technology in the latest of ophthalmic microscopes now appears to provide great breadth of red reflex enhancement throughout the entire procedure. Dr. Ike Ahmed is one of the first ophthalmologists having tested the Proveo 8 microscope which features the CoAx4 illumination. https://www.leica-microsystems.com//science-lab/the-impact-of-a-stable-red-reflex-and-enhanced-focus-in-cataract-surgery/ Mon, 15 Feb 2016 14:17:00 +0000 Dr. Ike Ahmed, Kerstin Pingel https://www.leica-microsystems.com/17543 Surgical Microscopy Cataract Surgery with CoAx4 Illumination A stable red reflex is one of the most important features of an ophthalmic surgical microscope for cataract surgery. It’s the red reflex that makes the structure of the lens visible and thus makes for a uncompromised view for a successful and secure surgery. However, conventional red reflex illumination often decreases during the critical phases of the procedure like phacoemulsification. A new illumination technology with four individual beam paths overcomes these drawbacks. https://www.leica-microsystems.com//science-lab/cataract-surgery-with-coax4-illumination/ Tue, 09 Feb 2016 15:31:00 +0000 Kerstin Pingel, Manfred Kuster https://www.leica-microsystems.com/16544 Optical Coherence Tomography Handheld Optical Coherence Tomography During Sedation in Young Children With Optic Pathway Gliomas Monitoring young children with optic pathway gliomas (OPGs) for visual deterioration can be difficult owing to age-related noncompliance. Optical coherence tomography (OCT) measures of retinal nerve fiber layer (RNFL) thickness have been proposed as a surrogate marker of vision but this technique is also limited by patient cooperation. To determine whether measures of circumpapillary RNFL thickness, acquired with handheld OCT (HH-OCT) during sedation, can differentiate between young children with and without vision loss from OPGs. https://www.leica-microsystems.com//science-lab/handheld-optical-coherence-tomography-during-sedation-in-young-children-with-optic-pathway-gliomas/ Mon, 09 Nov 2015 13:13:00 +0000 https://www.leica-microsystems.com/16542 Optical Coherence Tomography High Resolution Optical Coherence Tomography Guided Donor Tissue Preparation for Descemet's Membrane Endothelial Keratoplasty Using Reverse Big Bubble Technique This study assessed the feasibility of High Resolution Spectral Domain Optical Coherence Tomography (HR-SDOCT) to guide donor tissue preparation in Descemet's Membrane Endothelial Keratoplasty (DMEK) using the reverse big bubble technique. https://www.leica-microsystems.com//science-lab/high-resolution-optical-coherence-tomography-guided-donor-tissue-preparation-for-descemets-membrane-endothelial-keratoplasty-using-reverse-big-bubble-technique/ Mon, 09 Nov 2015 13:12:00 +0000 https://www.leica-microsystems.com/16540 Optical Coherence Tomography OCT Publication List OCT is a non-invasive, contact-free technique that helps to detect and monitor morphological changes of ocular tissue, in particular retinal layer thickness, which can give insight into pathological conditions such as glaucoma, age-related macular degeneration (AMD) or diabetic retinopathy. This references list presents selected publications performed with an Envisu OCT imaging system. https://www.leica-microsystems.com//science-lab/oct-publication-list/ Mon, 09 Nov 2015 13:10:00 +0000 Eric Buckland https://www.leica-microsystems.com/16532 Optical Coherence Tomography Surgical Microscopy Intraoperative OCT Today and Tomorrow: The PIONEER Study Two-year Results and Beyond The high-resolution, cross sectional information provided by iOCT creates a unique feedback system for vitreoretinal surgery. The PIONEER Study conducted by the Cole Eye Institute is a three-year exploratory study to investigate clinical feasibility, the impact on surgical decision-making, and the potential safety of a microscope-mounted portable iOCT. PIONEER represents the largest study to date examining the feasibility, utility, and safety of iOCT. https://www.leica-microsystems.com//science-lab/intraoperative-oct-today-and-tomorrow-the-pioneer-study-two-year-results-and-beyond/ Mon, 09 Nov 2015 13:09:00 +0000 https://www.leica-microsystems.com/16536 Optical Coherence Tomography Surgical Microscopy Video Talk by Sonia H. Yoo: Interoperative OCT Imaging of Selective Lamellar Keratoplasty The work prepared and presented within this video demonstrates preliminary research, and the promising future of perioperative OCT to aid the diagnosis of physiological and pathological conditions during ophthalmic surgery in order to help guide surgical decision making in anterior segment cases. Showing SDOCT Images acquired with an Envisu SD-OCT system, Prof. Yoo demonstrates the use of interoperative OCT imaging several important surgical procedures such as DALK, DSAEK and DMEK. https://www.leica-microsystems.com//science-lab/video-talk-by-sonia-h-yoo-interoperative-oct-imaging-of-selective-lamellar-keratoplasty/ Mon, 09 Nov 2015 13:07:00 +0000 Prof. Sonia H. Yoo https://www.leica-microsystems.com/15608 Surgical Microscopy Video: How Optical Innovations and 3D Heads-up Surgery Help to Improve Ophthalmic Surgery In this video, Dr. Ike Ahmed demonstrates how optical innovations help to improve ophthalmic surgeries. In addition, he talks about his experience with 3D heads-up surgery, using a stereoscopic high-definition visualization system for cataract, glaucoma, and retinal surgeries. https://www.leica-microsystems.com//science-lab/video-how-optical-innovations-and-3d-heads-up-surgery-help-to-improve-ophthalmic-surgery/ Mon, 27 Apr 2015 15:39:00 +0000 Dr. Ike Ahmed https://www.leica-microsystems.com/14612 Surgical Microscopy FusionOptics in Neurosurgery and Ophthalmology – for a Larger 3D Area in Focus Neurosurgeons and ophthalmologists deal with delicate structures, deep or narow cavities and tiny structures with vitally important functions. A clear, three-dimensional view on the surgical field is thus indispensable for the outcome of the operation and the patient’s safety. Until now, an increased depth of field for a larger three-dimensional area in focus was only achievable by reducing the resolution. A new technology is able to overcome this challenge. https://www.leica-microsystems.com//science-lab/fusionoptics-in-neurosurgery-and-ophthalmology-for-a-larger-3d-area-in-focus/ Wed, 08 Oct 2014 19:17:00 +0000 Kerstin Pingel https://www.leica-microsystems.com/13439 Surgical Microscopy New Paths in Glaucoma Therapy – Operation Video Supports Knowledge Transfer in Eye Surgery If medication and laser techniques have no prospect of success in the treatment of glaucoma, surgery is essential to stop further damage to the optic nerve. A new surgical method is showing promising results for reducing the potential complications of an operation. Professor Dr. Dr. h.c. Franz Grehn, former Director of Würzburg University Eye Hospital, has developed the new method and produced a video to accompany a clinical comparison study. This film was awarded the Video Award 2013 sponsored by Leica Microsystems at the 111th Congress of the German Ophthalmological Society. https://www.leica-microsystems.com//science-lab/new-paths-in-glaucoma-therapy-operation-video-supports-knowledge-transfer-in-eye-surgery/ Wed, 07 May 2014 08:31:00 +0000 Kerstin Pingel, PhD Franz Grehn https://www.leica-microsystems.com/9472 Surgical Microscopy State-of-the-Art Microscope Enables New Vitreoretinal Surgery Technique In pars plana vitrectomy, three ocular incisions are normally made. Thanks to the superb optics and the unique illumination concept of the Leica M844 F40, Dr. Luca Cappuccini from Reggio Emilia Hospital in Italy can operate without one of the incisions for certain vitreoretinal procedures. This shortens the duration of surgery and speeds up eye recovery time. https://www.leica-microsystems.com//science-lab/state-of-the-art-microscope-enables-new-vitreoretinal-surgery-technique/ Fri, 13 Aug 2010 17:54:00 +0000 Dipl. oec.-troph. Anja Schué, Dr. Luca Cappuccini https://www.leica-microsystems.com/9456 Surgical Microscopy Seeing Without a Haze – Trends in Cataract Surgery Cataract surgery has been practised for centuries and is one of the most common operations performed worldwide today. Ultra modern surgical techniques with tiny incisions and high-quality prosthetic lenses make the operation extremely safe and yield excellent results. Nevertheless, cataract surgery is being perfected all the time. https://www.leica-microsystems.com//science-lab/seeing-without-a-haze-trends-in-cataract-surgery/ Fri, 29 May 2009 10:59:00 +0000 Dipl. oec.-troph. Anja Schué, Dr. Antoine P. Brézin