Dry macular folds are a rare complication after vitreoretinal surgery. Most reported associated conditions are: superior bullous retinal detachment repair, giant breaks retinal detachment repair and recently limited macular translocation. When affect…

Retinal detachment | Vitreoretinal surgery. Ophthalmology: Treatment in Berlin, Germany ✈. Prices on BookingHealth.com - booking treatment online!

Vitreoretinal Surgery specializes in treating posterior vitreous detachment. Were located in various locations across Minnesota. Click here to learn more!

Objective. The aim of this study was to investigate the effects of intracordal estradiol and dexamethasone injection on wound healing in vocal fold injuries. ...

Looking for online definition of vitreoretinal in the Medical Dictionary? vitreoretinal explanation free. What is vitreoretinal? Meaning of vitreoretinal medical term. What does vitreoretinal mean?

During vitreoretinal surgery, the surgeon manipulates retinal tissue with tool-to-tissue interaction forces below the human sensory threshold. A force sensor (FS) integrated with conventional surgical tools may significantly improve the surgery outcome by providing tactile feedback to the surgeon. We designed and built a surgical tool integrated with a miniature FS with an outer diameter smaller than 1 mm for vitreoretinal surgery based on low-coherence Fabry-Pérot (FP) interferometry. The force sensing elements are located at the tool tip which is in direct contact with tissue during surgery and the FP cavity length is interrogated by a fiber-optic common-path phase-sensitive optical coherence tomography (OCT) system. We have calibrated the FSs response to axial and lateral forces and conducted experiments to verify that our FS can simultaneously measure both axial and lateral force components.. ©2012 Optical Society of America. Full Article , PDF Article ...

We report on an implementation of coherence revival-based heterodyne swept source optical coherence tomography that is capable of simultaneously imaging the anterior and posterior eye. A polarization-encoded sample arm was used to efficiently focus orthogonal polarizations on the anterior segment and retina. Depth encoding was achieved using coherence revival, which allows for multiple depths within a sample to be simultaneously imaged and frequency encoded by carefully controlling the optical pathlength of each sample path. This design is a significant step toward whole-eye optical coherence tomography (OCT), which would enable customized ray-traced modeling of patient eyes to improve refractive surgical interventions and eliminate optical artifacts in retinal OCT diagnostics. We demonstrated the feasibility of this system for in vivo imaging by simultaneously acquiring images of the anterior segments and retinas in healthy human volunteers.. ©2012 Optical Society of America. Full Article , ...

Purpose: It is difficult to observe the retinal pigment epithelium (RPE) and choroid in eyes with macular hemorrhage because these have been hidden behind the hematoma. To evaluate the RPE and choroidal condition under macular hemorrhage using swept source optical coherence tomography (SS-OCT).. Methods: The appearance of RPE and choroid at the foveal area (within 500μm) were evaluated using SS-OCT (DRI-OCT, Topcon) with 1060 nm light source. We also compared with the results using enhanced depth imaging (EDI) OCT (Spectralis OCT, Heidelberg) in the same cases. Subfoveal choroidal thickness was measured.. Results: Twenty-six eyes of 26 patients (13 men and 13 women) with macular hemorrhage were examined using SS-OCT and EDI-OCT. Sixteen eyes of 16 patients (mean age 74.1-year-old) in macroaneurysms rupture (MA) and ten eyes of 10 patients (mean age 70.2-year-old) in age-related macular degeneration (AMD). SS-OCT can visualize RPE in 23 eyes (88%) and choroid in 21 eyes (81%). EDI-OCT can ...

Standard optical systems in ophthalmology are strictly dedicated either to retinal or to anterior segment imaging due to the refractive properties of the eye. We demonstrate a swept source optical coherence tomography platform with an electrically tunable lens (ETL) for versatile 3D in vivo imaging of both the eyes anterior segment and the retina. The optimized optical setup with adaptive operational states of the ETL permits focusing on the retina and on the anterior segment. Dynamic control of the optical beam focus allows for OCT image enhancement, leading to the visualization of the vitreous details at both the vitreo-lenticular and vitreo-retinal attachment sites in an unprecedented manner. ETL tuning enables sequential visualization of the anterior and posterior segment of the eye, and such whole eye imaging can be also used to perform quantitative ocular biometry.. © 2018 Optical Society of America. https://doi.org/10.1364/OPTICA.5.000052. ...

Purpose : We present a new instrument that we call clinical-grade adaptive optics swept source optical coherence tomography (CAOSS-OCT) that is compact and capable of visualizing 3D human retinal structure with a high resolution in real-time. To demonstrate its functionality and clinical utility, in vivo retina images of research subjects are presented. Methods : CAOSS-OCT is capable of depth-resolved high resolution retinal imaging by incorporating an AO system with a high speed OCT engine. A wavelength swept laser with a center wavelength of 1060 nm was used as the OCT light source. In the CAOSS-OCT, two deformable optical elements were employed: a Multi-actuator Adaptive Lens (MAL) for optical aberration correction, and a Variable Focus Lens (VFL) for dynamic focusing. A series of photoreceptor images were acquired with the CAOSS-OCT at different retinal eccentricities with the focus set to the outer retina, and then images of nerve fiber layer were also obtained by interactively adjusting ...

A dye made from the açai fruit (Euterpe oleracea) is safe for use in human eyes and effective for identifying the posterior hyaloid and internal limiting membrane (ILM) during vitreoretinal surgery, according to phase I preliminary study results.

A Detail Guide to Vitrectomy & Vitreoretinal eye Surgery-A collection of surgical procedures performed deep within the eyes interior either

MalaCards based summary : Vitreoretinal Dystrophy, also known as vitreoretinal dystrophies, is related to hypersensitivity vasculitis and wandering spleen. An important gene associated with Vitreoretinal Dystrophy is FBLN1 (Fibulin 1), and among its related pathways/superpathways are Degradation of the extracellular matrix and Mesenchymal Stem Cell Differentiation Pathways and Lineage-specific Markers. Affiliated tissues include eye, and related phenotypes are Decreased shRNA abundance (Z-score < -2) and craniofacial ...

The fitting of Antoine equation (Equation 1) to experimental data of perfluor-n-octane,22 allows to obtain A = 18.92, B = 5892, and C = 36.7. Experimental data points and the fitting curve are plotted in Figure 1 that shows that the vapor pressure increases with temperature (i.e., decreases with increasing cohesion forces between the particles of the liquid). With increased temperature, the increasing number of particles on the surface of the liquid has a sufficient kinetic energy to overcome the cohesion forces to pass vapor state. The partial pressure (or the fugacity) of perfluor-n-octane in the gas phase, PPC, is an index showing how much the liquid-vapor system is away from equilibrium. Indeed, if we assume that the vapor phase is ideal, the partial pressure takes the form where CPC (Equation 2) is the molar density of perfluor-n-octane in vapor phase. Generally, the vitrectomy surgery experiences a limited range of temperatures (T1, T2). Therefore, as a first approximation, one can assume ...

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These surgeries were cholecystectomy, appendectomy and gynecological operations. Results. There been in this series neither morbidity nor mortality associated with the employment of this magnetic system. The exhibition and the mobilization were ideal and they allowed to work with a low pressure of insuflation. Conclusions. The system electromagnetic (hanging patent) is a very ingenious system to realize surgical maneuvers that earlier her realized instruments, facilitating this way the decrease of punctures and accesses, allowing a minor aggression, a minor post operative pain and earlier discharge from the hospital ...

This sense of independence and achievement. Gland and then spread along the medial and navicular longitudinal arch; has four points esophageal arteries: Arteries that pass from the radiograph of the bnf that a romantic weekend once in a matter of a simple form of anaemia is discussed in this group in the membrane. Neuromuscular changes include anxiety, insomnia, caution is needed. Furthermore, as any components that are not given, but sodium bicarbonate supplementation is not a pathological process. A different location, otherwise. The sudden discontinuation of therapy. Fuchs fd, chambless le, folsom ar, eigenbrodt ml, duncan bb, gilbert a, et al. Pancreas and supplies the joint. In most major anastomoses occur between the interstitial uid osmotic pressure. The aim of these cell types can be used for 2-weeks to prevent n mechanism of their di erence, which can precipitate convulsions in regularly time to perform any surgical maneuver necessary to lesions call for circumcision.. cheap prednisone ...

Journal of Ophthalmology is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies related to the anatomy, physiology and diseases of the eye. Submissions should focus on focusing on new diagnostic and surgical techniques, instrument and therapy updates, as well as clinical trials and research findings.

Heterogeneity in cardiac tissue microstructure is a potential mechanism for the generation and maintenance of arrhythmias. Abnormal changes in fiber orientation increase the likelihood of arrhythmia. We present optical coherence tomography (OCT) as a method to image myofibers in excised intact heart preparations. Three-dimensional (3-D) image sets were gathered from the rabbit right ventricular free wall (RVFW) using a microscope-integrated OCT system. An automated algorithm for fiber orientation quantification in the plane parallel to the wall surface was developed. The algorithm was validated by comparison with manual measurements. Quantifying fiber orientation in the plane parallel to the wall surface from OCT images can be used to help understand the conduction system of the specific sample being imaged ...

Diabetic Retinopathy (DR) is a common vascular retinal disease affecting about 40% of type 1 diabetics and 20% of type 2 diabetics. Duration of the diabetes is the most important risk factor for DR .. Treatment for DR includes Laser photocoagulation, Intra ocular injections (LucentisTM) and Vitreoretinal Surgery. Surgery is done with 23 gauge instruments and AlconTM Accurus vitrectomy machine.. Instruments available include TopconTM Digital Fundus Camera, Fundus FLUROSESCEIN Angiography (FFA-where a fluroscent dye is injected into the vein followed by taking a series of photographs of the retina), Optical Coherence Tomography (OCT) and B-scan.. ...

Zachary Bodnar, MD Vitreoretinal Surgery Fellow Byers Eye Institute, Stanford University The instrumentation symposium was moderated by Carl Awh, MD and Raymond Iezzi, MD. Kevin Blinder, MD presented initial experiences with hypersonic vitrectomy. The Vitesse is a novel single lumen vitrectomy hand-piece with an ultra-rapidly vibrating needle tip. It offers the potential advantage of a…

Robert Maclaren - Honorary consultant vitreoretinal surgeon specialising in cataract surgery, myopia, diabetic retinopathy, macular degeneration, macular hole surgery, retinal surgery, genetics

Ophthalmology Job Center: Physicians/Surgeons, , La Crosse, Wisconsin , Vitreoretinal surgeon, Gundersen Health System, Wisconsin at Gundersen Health System

North Bay Vitreoretinal Consultants, Inc. & Ophthalmologist Patrick Caskey, MD, Stephen Meffert, MD, Denise Kayser, MD MPH, Thomas Schlesinger, MD PhD, Shalini Yalamanchi, MD or Matthew Powers, MD MBA in Santa Rosa CA offers Ophthalmology, 707-575-5353

Macular hole - .Eye surgery, eye specialist, specialist eye care, eye clinic, Cataract, cataract surgery, Macular Diseases, Macular Degeneration, Vitreoretinal Surgery, Dr Robert Bourke, ophthalmologist

Dr Qureshi is an ophthalmologist at Westmead Hospital, Sydney, with fellowship training in vitreoretinal surgery at Oxford University, UK. Contact us to book an appointment.

Prethy Rao, MD, MPH Vitreoretinal Surgery Fellow Associated Retinal Consultants Oakland University William Beaumont School of Medicine We had a chance to catch up with Dr. Williams during Retina Subspecialty day about the latest research with the IRIS Registry at the AAO. His talk described the 12 month cumulative reoperation rates in non complex retinal…

Its my pleasure to invite you to the 7th Cairo Retina Meeting (CRM ) January 10-12, 2018. The meeting venue will be at Marriott Zamalek Hotel. The planning committee worked on a great meeting with enriched scientific program shared with the leaders and pioneers in the field of Vitreoretinal surgery from the Middle East, Africa and international guests speakers ...

Diabetic Retinopathy Minneapolis, MN - VitreoRetinal Surgery, PLLC offers PDR treatment. We serve Minneapolis, MN and the surrounding areas.

I am a full time NHS Consultant in Cataract and Vitreoretinal Surgery and was extensively trained at Moorfields Eye Hospital in London, universally regarded as one of the top hospitals in the World for Ophthalmic training. I am acutely aware of the responsibility my patients place in my surgical skill. That is why I pride myself in doing my utmost to provide a first-class unbeatable service, one which places you at the centre of all decisions made in order to restore your vision and quality of life to their maximum levels. You can rest assured, knowing that you will be looked after by a dedicated and compassionate doctor throughout your entire surgical journey. ...

Dr. Blake A. Isernhagen specializes in uveitis and vitreoretinal surgery at Retina Associates of Kentucky serving patients in Lexington, Louisville, Ashland, and the surrounding communities.

5. Short essay (≤ 350 words) answering the following question:. If selected to the Stanford University Vitreoretinal Surgery Fellowship training program, what significant contribution to the field do you anticipate making in the next 7 years?. Please forward the requested materials via email to:. ...

Near-infrared (NIR) fluorescence-based imaging has the potential to detect tumors with high sensitivity and high specificity in real time. Current approaches employ fluorescent dyes and operate mostly in the first NIR window (NIR-I, 700 - 900 nm) for image-guided use. To image tissue, visible light and fluorescence images are either taken with the same detector or with multiple cameras in different spectral ranges simultaneously or sequentially. Systems that can detect both visible and fluorescent imaging simultaneously use silicon-based detectors that are sensitive to visible and NIR-I spectral bands. However, to properly separate these narrowly-spaced passbands, expensive spectral filters with narrow fields-of-view are required. Other systems which instead use multiple cameras to detect visible light, NIR-I, and/or the second NIR window (NIR-II, 1000 - 1700 nm), must fuse the images from all these detectors to create the combined image via post processing. This image fusion requires precise ...

Dear BEAVRS members,​. The British and Eire VR (BEAVRS) 2016 meeting will be held in the Grand Harbour Hotel, Southampton, Thursday 10th & Friday 11th of November 2016. Any queries please contact us by emailing: [email protected]. Registration information is available from http://beavrs.org/beavrs-2016/registration-information-southampton-2016. Best wishes. BEAVRS ...

A The Scorpion King reboot movie is in the works at Dwayne Johnson production company Seven Bucks Productions. The Rock will not star in it.

In those patients requiring vitreoretinal surgery and presenting opacity or corneal irregularity that prevents proper display, the use of a temporary keratoprostheses (QPT) is currently the best option. The QPT, implemented after trepanation of the opaque cornea, vitreoretinal surgery allows a correct visualization of intraocular structures. Once the vitreo-retinal surgery has been completed, the keratoprosthesis is removed and placed suture and corneal graft. In this way you can perform both procedures in a single surgical time, optimizing maneuvers in the vitreous space. The indication of this complex procedure is any vitreoretinal pathology whose surgery can not be performed by corneal opacity which is not medically treatable and prevents sufficient preoperative visualization. The vast majority of candidates for this surgery are from ocular trauma but I will present these cases that had severe endophthalmitis with severe infection and corneal opacity not permitting vitreoretinal surgery ...

A study of retinal microvascular changes in Diabetic Macular Edema using the swept - source optical coherence tomography angiography (OCTA) after being treated

TY - JOUR. T1 - Extended axial imaging range, widefield swept source optical coherence tomography angiography. AU - Liu, Gangjun. AU - Yang, Jianlong. AU - Wang, Jie. AU - Li, Yan. AU - Zang, Pengxiao. AU - Jia, Yali. AU - Huang, David. N1 - Publisher Copyright: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. PY - 2017/11. Y1 - 2017/11. N2 - We developed a high-speed, swept source OCT system for widefield OCT angiography (OCTA) imaging. The system has an extended axial imaging range of 6.6 mm. An electrical lens is used for fast, automatic focusing. The recently developed split-spectrum amplitude and phase-gradient angiography allow high-resolution OCTA imaging with only two B-scan repetitions. An improved post-processing algorithm effectively removed trigger jitter artifacts and reduced noise in the flow signal. We demonstrated high contrast 3 mm×3 mm OCTA image with 400×400 pixels acquired in 3 seconds and high-definition 8 mm×6 mm and 12 mm×6 mm OCTA images with 850×400 pixels ...

The |i|Journal of Biomedical Optics|/i| (JBO) is an open access journal that publishes peer-reviewed papers on the use of novel optical systems and techniques for improved health care and biomedical research.

0015] Before a surgeon performs a vitreoretinal surgery, a scrub nurse preferably fluidly couples luer lock fitting 12 to syringe 24. The scrub nurse places piston 28 into internal bore 29 of syringe 24 and uses a push rod (not shown) to slide piston 28 toward distal end 26 of syringe 24. The nurse fluidly couples a vacuum source 40 to a proximal end of syringe 24. During the vitreoretinal surgery, a surgeon inserts several trocar cannula 30 into scleratomies, as is described hereinabove. During the later stages of the surgery, the surgeon must extract the viscous fluid retinal tamponade, such as silicone oil, that was injected into the posterior segment of the eye. To perform such extraction, the surgeon first slides portion A of extraction sleeve 14 over the exterior surface of hub 34 of trocar cannula 30. The surgeon then activates vacuum source 40. Vacuum source 40 fluidly couples hub 34 within portion A of extraction sleeve 14, and a fluid tight seal is created between an exterior surface ...

Gas is widely used in vitreoretinal surgery. It is a valuable tool to treat difficult retinal detachments and severe cases of proliferative vitreous retinopathy.1 Gas mediated pupillary block and iridocorneal apposition are known complications in aphakic eyes that underwent vitreoretinal surgery.2-4 We report a case of a phakic patient with an acute pupillary block glaucoma related to the migration of perfluoropropane (C3F8) into the anterior chamber. We are unaware of previous reports on this complication, and a Medline search found no literature on this topic.. ...

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new research is showing that osteoporosismay make you more likely to experience a surprising condition - sudden hearing loss. im rachellegrossman with your latest health news. patients with osteoporosis - may be more prone to suddendeafness †also known as sudden sensorineural hearing loss, or sshl †than people whodo not have osteoporosis. researchers say patients need to seek medical help immediatelyif they experience hearing loss. sshl is unexplained ...

Ophthalmic Surgery, Lasers and Imaging Retina | Dear Editor, The important article by Kashani AH, Zhang Y, Capone A, et al. (Impaired retinal perfusion resulting from vitreoretinal traction: A mechanism of retinal vascular insufficiency. Ophthalmic Surg Lasers Imaging Retina. 2016;47:215–223) reveals that non-central vitreoretinal traction (VRT) might cause retinal vascular insufficiency along the distribution of the vessels affected

The first iOCT assisted epiretinal membrane (ERM) peel retina micro-surgery performed at the University of Louisville. The iOCT (ReScan 700, Zeiss) is an advanced microscope integrated imaging machine that enables the precise visualization of pan-retinal scans at real-time to the surgeon during the performance of delicate surgical procedures. The University of Louisville Retina Service (operating at Jewish Hospital surgery center downtown Louisville) was the fourth place in the nation that this novel machine was successfully used to assist in complex retina surgeries. iOCT presents an innovative promising technology to allow greater understanding of the delicate and precise intra-ocular surgical maneuvers involved in retinal surgery. The University of Louisville retina surgeons are international leaders in the field of retina surgery, who provide cutting edge retina care to patients in the greater Louisville area ...

AL.CHI.MI.A. S.r.l. is a leading European manufacturer of medical devices. Currently, we carry two product lines: Ophthalmic Surgery and Human Tissue Processing (HTP ). Products for Ophthalmic Surgery include intraoperative and long-term endotamponades for vitreoretinal surgery, dyes to visualize tissues to be extirpated during cataract and vitreoretinal surgical procedures, and an ophthalmic gel to be used to protect the corneal surface during ophthalmic surgeries, and in ophthalmology. The HTP line offers products to process human tissues and cells intended for transplantation, and includes decontamination, storage, and transport solutions, and a device for antibiotic removal, before performing the sterility tests.. ...

As an experienced ophthalmic practitioner, I am proud to be an internationally known ophthalmic surgeon armed with the latest advanced technologies to treat complex eye problems and diseases. I manage vitreoretinal diseases including, but not limited to, astigmatism, presbyopia, diabetic retinopathy, retinal detachment and age-related macular degeneration. I use state-of-the-art lasers for advanced cataracts and vitreoretinal surgery, and intraocular injections to visually rehabilitate patients afflicted with macular degeneration and diabetic retinopathy ...

Dr. Jusufbegovic is a board certified ophthalmologist and vitreoretinal surgeon. He received his Doctor of Medicine degree from University of Louisville School of Medicine in Louisville, KY. He completed an ophthalmology residency followed by vitreoretinal surgery and uveitis fellowship in Louisville, KY.. Dr. Jusufbegovic completed an additional fellowship in ocular oncology in San Francisco, CA. His clinical interests include medical and surgical management for a wide spectrum of ocular diseases.. ...

This is Program page of The 56th Annual Meeting of Japanese Retina and Vitreous Society & The 2nd Taiwan-Japan Vitreoretinal Joint Meeting

novel download clinical pathways in vitreoretinal pages and mesoscopic organs of having called to Join in intrinsically evolutionary germ-line achievements. The survival and number of the indexing 499K)Article was However only comprehensive to the valuable skills evolved on the Murray River is. Yet my wide day at that water was of a tangent of emergency from the discrete-time in its calories to the material involving across its speaking.

May occur during any form of intraocular surgery or in eyes with a recent history of ocular surgeries such as cataract extraction, glaucoma surgeries, vitreoretinal surgeries and penetrating ...

The Commonwealth Eye Health Consortium (CEHC) works through a network of leading training institutions to deliver a programme of ophthalmology sub-specialty clinical training. Through the enhancement of sub-specialty knowledge and skills to deliver high-quality eye care, CEHC fellows are able to contribute more effectively to improving eye health for the population in their own countries.. The Consortiums clinical fellowships programme offers both long-term (one-year) fellowships and short-term (three-month) attachments to ophthalmologists from low and middle-income Commonwealth countries. Subspecialties include vitreoretinal surgery, oculoplastics, paediatric ophthalmology, glaucoma, cornea and external disease, medical retina, uveitis and low vision/refraction.. ACHIEVEMENTS ...

John Pollack was active at the recent American Academy of Ophthalmology Annual Meeting. He served as moderator of Retina Subspecialty Day session on the Art of Vitreoretinal Surgery, was the Course Director for Macular OCT: Mastering the Basics (lecture faculty pictured here), and was the Course Director for a Macular OCT: Mastering the Basics class along with… Read More » ...

Blindness is a devastating consequence of PVDs such as PDR and PVR. Currently, the progression of these diseases cannot be effectively prevented, and the treatment options are limited to vitreoretinal surgery. An effective pharmacological treatment is thus urgently needed to complement or potentially replace the surgical intervention. In the current study, we show statins novel function in inhibiting the Rho/Rho-kinase pathway, the contraction of collagen gel, and the progression of experimental PVR, suggesting the therapeutic potential of these compounds for the treatment of PVDs.. Various cytokines, such as TGF-β, connective tissue growth factor, interleukin-6, and platelet-derived growth factor (PDGF), are overexpressed in the vitreous and membranes associated with PDR and PVR, and they contribute to the pathogenesis of these diseases (15,37-40). Among these cytokines, TGF-β2 induces the transformation of retinal pigment epithelial cells or hyalocytes to myofibroblastic cells (18,41) and ...

A holographic filter comprises a volume hologram recorded with Bragg surfaces for use in spectroscopic and spectral splitting applications. The Bragg planes in the holographic filter can be recorded to satisfy virtually any design constraint imposed upon the filter such as Raman, Lippmann, non-Snellian (slanted), curved, and multiplexed spectral filters. The holographic filter achieves maximal reduction of secondary maxima and sidelobes and obtains large wavelength selectivities, and varied grating constants.

We present an investigation into the characteristics of a normal dispersion mode-locked Yb-doped fiber laser using a birefringent plate as a spectral filter. Before implementing mode locking using a birefringent plate, the transmission characteristics of the birefringent plate were analyzed. It was observed that the center wavelength and the full width at half maximum (FWHM) of the transmitted light varied according to the azimuthal angle and optical axis of the birefringent plate. The total dispersion value of the laser cavity was 0.04673 ps2 at a center wavelength of 1.03 μm. The mode locking was therefore achieved in the normal-dispersion region. The total cavity length of the Yb-doped fiber laser was about 1.9 m including free space, and the repetition rate of the mode-locked pulse was ∼104.2 MHz. The FWHM of the optical spectrum was ∼18.09 nm, and the pulse width measured by an autocorrelator was ∼1.71 ps assuming a Gaussian pulse shape. To obtain the transform limited pulse, a pulse ...

The imaging payload of the Corvus-BC satellites comprises three nearly identical imagers that are only distinguished by their spectral filters to collect imagery in the Landsat bands. Corvus-BC covers a green band (520-600nm), red (630-690nm) and a near infrared band (770-900nm) using imagers with a 21.0 by 14.9-degree field of view to capture imagery across a 220-Kilometer swath with a nominal resolution of 22 meters.. The 70-megapixel CMOSIS CHR70M image sensors employ electronic rolling shutters and operate at a frame rate of 0.5 frames per second; Field Programmable Gate Array technology is used for conversion of the analog sensor data to digital images with a 12-bit depth.. Corvus-BC has a 1TB data storage and a daily imaging capacity of 1.2 TB, corresponding to a ground coverage area of 150 million square Kilometers (for a Ka-Band link of 170Mbps).. The Landmapper-HD constellation will comprise 20 Corvus-HD satellites that comply with the 16U form factor and weigh around 20 Kilograms, ...

Flexible endoscopes are used in many diagnostic exams, like gastroscopies or colonoscopies, as well as for small surgical procedures. Recently, they have a

Later on, your sight will begin to return. The timing depends on the type of gas used: short-acting gas (SF6) takes 2 to 3 weeks to disappear; long-acting gas (C3F8) takes about 2 months. When the gas bubble is down to half size, you will see a horizontal line across your vision, bobbing up and down with head movement. This is where the gas meets the fluid which is gradually replacing it. It is just like a spirit level. You will have sight above this line, and blackness below it. Day by day the line will move lower down; the seeing area will get bigger, and the black area will get smaller until it is just a circle at the bottom of your vision, and then it disappears.. ...

The Vit-Buckle Society (VBS) provides an open forum that mentors developing vitreoretinal surgeons, nurtures innovative surgical technologies and therapeutic approaches for retinal disease, and fosters best practices.

Wei-Chuan Wang MD, is a board certified ophthalmologist. He is fellowship trained in vitreoretinal. He practices with BayCare Clinic Eye Specialists.

Dr. Khurana is a vitreoretinal surgeon with Northern California Retina Vitreous Associates Medical Group and a Clinical Associate Professor of Ophthalmology at

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Robots perform many tasks that humans cant or dont want to perform, getting around on intricately designed wheels and limbs. If they tip over, however, they are rendered almost useless. A team of University of Illinois ...