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201. Submicrometer precision biometry of the anterior segment of the human eye

Author

Drexler W, Baumgartner A, Findl O, Christoph Hitzenberger, Sattmann H, and Af, Fercher

Subjects
Adult, Male, Mydriatics, Anthropometry, Light, Anterior Chamber, Reproducibility of Results, Pupil, Middle Aged, Cornea, Interferometry, Cyclopentolate, Lens, Crystalline, Myopia, Feasibility Studies, Humans, Female, Aged
Abstract

To demonstrate the feasibility of measuring the anterior structures of the human eye by partial coherence interferometry and to determine its precision for eyes under normal and cycloplegic conditions.The dual-beam version of partial coherence interferometry, a recently developed noninvasive optical ranging technique, enables high resolution measurements of several intraocular distances with unprecedented precision. A modified, more sensitive scanning version of this technique was used to assess the central and peripheral corneal thickness, the anterior chamber depth, and the lens thickness of 20 healthy, emmetropic to moderately myopic eyes. Furthermore the anterior structures of three eyes were measured under cycloplegia (1% cyclopentolate) to investigate the influence on the precision of this technique after suppression of residual accommodations.The mean geometric precision (standard deviation) of the measurement of the central corneal thickness was 0.29 micron (range, 0.22 micron to 0.38 micron) and 0.43 micron (range, 0.27 micron to 0.56 micron) for the peripheral corneal thickness at a distance 2 mm from its apex. The precision for measuring the anterior chamber depth and the lens thickness for fixation at infinity was 8.7 microns (range, 3.9 microns to 16.8 microns) and 8.9 microns (rang, 2.9 microns to 14.4 microns) for noncycloplegic eyes and 1.9 microns (range, 1.7 microns to 2 microns) and 1.4 microns (range, 0.7 micron to 1.8 microns) for cycloplegic eyes, respectively.The dual-beam partial coherence interferometry enables fast, noninvasive, submicrometer precision biometry of the anterior segment of the eye. The precision of determining the anterior chamber depth and the lens thickness is more than one order of magnitude better than that of the currently used ultrasound and optical techniques, and it can be improved by a factor of 5 by using cycloplegia.

210. Eye elongation during accommodation in humans: differences between emmetropes and myopes

Author

Drexler, W., Findl, O., Schmetterer, L., Christoph Hitzenberger, and Fercher, A. F.

Subjects
Adult, Male, Interferometry, Light, Myopia, Accommodation, Ocular, Humans, Female, Fixation, Ocular, Eye, Refraction, Ocular
Abstract

The pathophysiology and pathogenesis of myopia are still a matter of controversy. Exaggerated longitudinal eye growth is assumed to play an important role in the development of myopia. A significant correlation between refraction and amount of near-work has been reported. However, current knowledge of changes of axial eye length with accommodation is limited because clinical ultrasound biometry does not provide the precision and resolution required to thoroughly investigate these phenomena.Partial coherence interferometry (PCI), a noninvasive biometric technique, uses laser light with short coherence length in combination with interferometry to achieve precision in the micrometer to submicrometer range and resolution of 10 microm. In the present study this technique was used to investigate axial eye length changes in 11 emmetropic and 12 myopic eyes during monocular fixation at the far and near point. In 7 subjects, the contralateral eye has also been measured to investigate interocular differences in eye elongation.All investigated eyes elongated during accommodation. This elongation was more pronounced in emmetropes than in myopes (P0.001). Mean accommodation-induced eye elongations of 12.7 microm (range, 8.6-19.2 microm) and 5.2 microm (range, 2.1-9.5 microm), corresponding to a dioptric change of approximately -0.036 D and -0.015 D, were obtained for emmetropes and myopes. No significant difference in accommodative amplitudes between groups (5.1 +/- 1.2 D [range, 3.8-7.1 D] versus 4.1 +/- 2.0 D [range, 1.0-7.1 D]; P = 0.14) was detected. No significant interocular difference in accommodation-induced eye elongation was revealed (P = 0.86). Also, a mean backward movement of the posterior lens pole of 38 microm (range, 9-107 microm) was observed in both study groups.The detected eye elongation can be explained by the accommodation-induced contraction of the ciliary muscle, which results in forward and inward pulling of the choroid, thus decreasing the circumference of the sclera, and leads to an elongation of the axial eye length. Finally, it was demonstrated that PCI, in contrast to clinical ultrasound, is capable of characterizing eye length changes during accommodation in humans.

211. Optical coherence tomography - principles and applications

Author

Fercher, A. F., Drexler, W., Hitzenberger, C. K., and Lasser, T.

Subjects
genetic structures, REAL-TIME, DIFFERENTIAL PHASE-CONTRAST, SMART DETECTOR ARRAY, eye diseases, LIGHT-SCATTERING, PHOTONIC-CRYSTAL FIBER, FLUID-FLOW VELOCITY, DYNAMIC, FREQUENCY-DOMAIN REFLECTOMETRY, SINGLE-MODE FIBER, HIGH-SPEED, sense organs, BIOLOGICAL TISSUE
Abstract

There have been three basic approaches to optical tomography since the early 1980s: diffraction tomography, diffuse optical tomography and optical coherence tomography (OCT). Optical techniques are of particular importance in the medical field, because these techniques promise to be safe and cheap and, in addition, offer a therapeutic potential. Advances in OCT technology have made it possible to apply OCT in a wide variety of applications but medical applications are still dominating. Specific advantages of OCT are its high depth and transversal resolution, the fact, that its depth resolution is decoupled from transverse resolution, high probing depth in scattering media, contact-free and non-invasive operation, and the possibility to create various function dependent image contrasting methods. This report presents the principles of OCT and the state of important OCT applications. OCT synthesises cross-sectional images from a series of laterally adjacent depth-scans. At present OCT is used in three different fields of optical imaging, in macroscopic imaging of structures which can be seen by the naked eye or using weak magnifications, in microscopic imaging using magnifications up to the classical limit of microscopic resolution and in endoscopic imaging, using low and medium magnification. First, OCT techniques, like the reflectometry technique and the dual beam technique were based on time-domain low coherence interferometry depth-scans. Later, Fourier-domain techniques have been developed and led to new imaging schemes. Recently developed parallel OCT schemes eliminate the need for lateral scanning and, therefore, dramatically increase the imaging rate. These schemes use CCD cameras and CMOS detector arrays as photodetectors. Video-rate three-dimensional OCT pictures have been obtained. Modifying interference microscopy techniques has led to high-resolution optical coherence microscopy that achieved sub-micrometre resolution. This report is concluded with a short presentation of important OCT applications. Ophthalmology is, due to the transparent ocular structures, still the main field of OCT application. The first commercial instrument too has been introduced for ophthalmic diagnostics (Carl Zeiss Meditec AG). Advances in using near-infrared light, however, opened the path for OCT imaging in strongly scattering tissues. Today, optical in vivo biopsy is one of the most challenging fields of OCT application. High resolution, high penetration depth, and its potential for functional imaging attribute to OCT an optical biopsy quality, which can be used to assess tissue and cell function and morphology in situ. OCT can already clarify the relevant architectural tissue morphology. For many diseases, however, including cancer in its early stages, higher resolution is necessary. New broad-bandwidth light sources, like photonic crystal fibres and superfluorescent fibre sources, and new contrasting techniques, give access to new sample properties and unmatched sensitivity and resolution.

221. Ultrahigh Resolution, Functional OCT with All-Fiber Broadband Raman-Continuum Light-Source

Author

Povazay, B., primary, Bizheva, K., additional, Gasparoni, S., additional, Hermann, B., additional, Unterhuber, A., additional, Sattmann, H., additional, Drexler, W., additional, Pflug, R., additional, Anger, E.A., additional, Reitsamer, H., additional, Ahnelt, P., additional, Travers, J.C., additional, Popov, S.V., additional, Taylor, J.R., additional, and Gapontsev, V.P., additional

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242. Optical coherence tomography of the choroid at 1050nm

Author

UNTERHUBER, A, POVAZAY, B, HERMANN, B, HOFER, B, SATTMANN, H, and DREXLER, W

Abstract

Purpose:Optical coherence tomography is a well established imaging modality for the retina at 800 nm, but is limited in its capability to visualize through scattering tissue, like through cataract or into the choroid.

Published
2007
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243. Patients with active rheumatoid arthritis but only few tender and swollen joints: a subgroup with impaired short term outcome.

Author

Fiehn, C., Kessler, S., Drexler, W., and Lorenz, H.

Subjects
*RHEUMATOID arthritis, *JOINT diseases, *INFLAMMATION, *PAIN management, *RHEUMATOLOGY
Abstract

The disease activity score of 28 joints (DAS28) is now commonly used for the guidance of treatment decisions in rheumatoid arthritis (RA). The goal of this work was to determine whether patients with DAS28 > 3.2 but less than 2 swollen and 2 tender joints respond differently to treatment than patients with a higher number of active joints. One hundred and ninety two patients with active RA treated in a rheumatology hospital as in-patients were studied prospectively. At admission (T1), release (T2) and 3 months after release (T3) disease activity (DAS28-CRP at T1 + 2, RADAI at T1 + 3), pain (numeric scale at T1 − 3) and function (FFbH at T1 + 3) were measured. A total of 148 patients had two or more (group 1) and 44 less than 2 swollen and tender joints at admission (group 2) but both groups had similar over all DAS28-scores. The groups significantly differed in their outcome after 3 months: group 1 had a significant better reduction of disease activity, pain and functional deficit ( p < 0.001 for the fulfilment of defined response criteria and p < 0.05 for comparison of the mean values for pain and function) in comparison to group 2. Although the numbers were small sub-analysis suggested that the differences might be due to a better response to newly administered DMARD and TNF-alpha-inhibitor therapy in group 1. Active RA patients with less than 2 swollen and 2 tender joints represent a subgroup with lower response to treatment with DMARD or TNF-alpha-inhibitors. This has to be taken into account in the management of these patients. [ABSTRACT FROM AUTHOR]

Published
2009
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244. Clinical data classification with noisy intermediate scale quantum computers.

Author

Moradi, S., Brandner, C., Spielvogel, C., Krajnc, D., Hillmich, S., Wille, R., Drexler, W., and Papp, L.

Subjects
*QUANTUM computers, *SUPPORT vector machines, *MACHINE learning, *QUANTUM states, *COMPUTER software development, *QUANTUM communication
Abstract

Quantum machine learning has experienced significant progress in both software and hardware development in the recent years and has emerged as an applicable area of near-term quantum computers. In this work, we investigate the feasibility of utilizing quantum machine learning (QML) on real clinical datasets. We propose two QML algorithms for data classification on IBM quantum hardware: a quantum distance classifier (qDS) and a simplified quantum-kernel support vector machine (sqKSVM). We utilize these different methods using the linear time quantum data encoding technique ( log 2 N ) for embedding classical data into quantum states and estimating the inner product on the 15-qubit IBMQ Melbourne quantum computer. We match the predictive performance of our QML approaches with prior QML methods and with their classical counterpart algorithms for three open-access clinical datasets. Our results imply that the qDS in small sample and feature count datasets outperforms kernel-based methods. In contrast, quantum kernel approaches outperform qDS in high sample and feature count datasets. We demonstrate that the log 2 N encoding increases predictive performance with up to + 2% area under the receiver operator characteristics curve across all quantum machine learning approaches, thus, making it ideal for machine learning tasks executed in Noisy Intermediate Scale Quantum computers. [ABSTRACT FROM AUTHOR]

Published
2022
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245. Choroidal thickness changes in response to defocus in emmetropia and in myopia.

Author

Weber, M., Esmaeelpour, M., Drexler, W., and Findl, O.

Subjects
*VISUAL accommodation, *MYOPIA, *OPTICAL coherence tomography
Abstract

Purpose This prospective study aimed to investigate the effect of myopic defocus on choroidal thickness in emmetropic, in moderately myopic and in highly myopic subjects. Methods A 3-dimensional spectral domain-optical coherence tomography (SD-OCT) system that operates at a wavelength of 1060 nm was used to measure choroidal thickness in the 9 sections according to the 'early treatment diabetic retinopathy study' (ETDRS) grid before and after a period of 60 minutes of defocus with a +3.00 Dioptre (D) lens in one eye of 15 emmetropic (spherical equivalent-SE: −0.75 to +0.75D; group A), 15 moderately myopic (SE: −6.00 to −2.50D; group B) and 15 highly myopic subjects (SE: ≥−6.25D; group C). Results Choroidal thickness was in all ETDRS fields significantly thicker in emmetropic than in moderately and in highly myopic subjects. Central field choroidal thickness before and after defocus was in group A 322 ± 59 μm and 321 ± 57 μm, in group B 259 ± 71 μm and 258 ± 65 µm and in group C 237 ± 64 µm and 237 ±65 µm. Choroidal thickness did not differ from before to after defocus in the central ETDRS field (group A: −1 ± 12 µm, p = 0.710; group B: −1 ± 8 µm, p = 0.660; group C: 0 ± 6 µm; p = 0.995; paired t-test) and these differences did not differ significantly between the groups (p=0.940, ANOVA). In the peripheral ETDRS fields choroidal thickness changes from before to after defocus were neither found to be significant within the groups (p > 0.05, paired t-test) nor between the groups (p > 0.05, ANOVA). Conclusions Myopic defocus does not influence the choroidal thickness in emmetropic, moderately myopic and in highly myopic subjects. [ABSTRACT FROM AUTHOR]

Published
2015
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246. 2020 taxonomic update for phylum Negarnaviricota (Riboviria: Orthornavirae), including the large orders Bunyavirales and Mononegavirales

Author

Amadou A. Sall, Christopher F. Basler, Gary P. Kobinger, Amy J. Lambert, Rodrigo Jardim, John V. da Graça, Yong-Zhen Zhang, Víctor Romanowski, Massimo Turina, John W. McCauley, Lin-Fa Wang, Paul A. Rota, Olga Dolnik, Juan Carlos de la Torre, Gabriele Neumann, Natalie J. Thornburg, Tomohide Natsuaki, Jin Won Song, Kartik Chandran, Carol D. Blair, Michael A. Drebot, Guohui Zhou, Rémi N. Charrel, Heather L. Wells, Ralf G. Dietzgen, Bernadett Pályi, Arnfinn Lodden Økland, Ian Crozier, Gael Kurath, Gilda B. Jonson, Robert R. Martin, Xuejie Yu, Anthony R. Fooks, Renato O. Resende, Ali Mirazimi, Bernadette G. van den Hoogen, Scott Adkins, Colin R. Parrish, Alexander Bukreyev, Anthony Griffiths, Timothy H. Hyndman, Peter Simmonds, Rachel Breyta, Zhìqiáng Wú, Ralf Dürrwald, Jorlan Fernandes, Biao Chen, Udo Hetzel, Alexandro Guterres, Jessica R. Spengler, Michael J. Buchmeier, Rayapati A. Naidu, Janusz T. Paweska, Keizō Tomonaga, Kamil Sarpkaya, Ivan V. Kuzmin, Jens H. Kuhn, Piet Maes, Marco Marklewitz, Masayuki Horie, Arvind Varsani, Shin-Yi Lee Marzano, Ursula J. Buchholz, Jean-Paul Gonzalez, Angelantonio Minafra, Daniela Alioto, Simon J. Anthony, Florian Pfaff, Brian H. Bird, Peter J. Walker, Robert A. Lamb, Noël Tordo, Rainer G. Ulrich, Sergio H. Marshall, Eric M. Leroy, Ayato Takada, Kirsten Spann, Xavier de Lamballerie, John M. Dye, Inmaculada Casas, Manuela Sironi, J. Christopher S. Clegg, Paul Brown, Dennis Rubbenstroth, Yan Liu, Márcio Roberto Teixeira Nunes, Tatjana Avšič-Županc, Martin Verbeek, Andrew J. Easton, Beatriz Navarro, Hideki Ebihara, Benhur Lee, Pierre Formenty, Qi Jin, Hideki Kondō, Eric Bergeron, Sébastien Massart, Daniel R. Perez, S. V. Alkhovsky, Charles H. Calisher, Anna Papa, Xīnglóu Yáng, José A. Navarro, Xifeng Wang, Taiyun Wei, Kim R. Blasdell, Lucie Dufkova, Renata Carvalho de Oliveira, Elba Regina Sampaio de Lemos, Nikos Vasilakis, Pedro Luis Ramos-González, Tong Zhang, Holly R. Hughes, Leonie Forth, Serpil Karadağ, F. Murilo Zerbini, Xueping Zhou, María Laura García, Tomáš Bartonička, Sandra Junglen, Aziz ul Rahman, Petra Straková, Karen E. Keller, William G. Dundon, Jiří Salát, Dexin Li, Jussi Hepojoki, Maria S. Salvato, Hui Wang, Justin Bahl, Bernd Hoffmann, Alberto M. R. Dávila, Jonathan S. Towner, Wénwén Liú, Mifang Liang, Yuri I. Wolf, Gaya K. Amarasinghe, Jianwei Wang, Alex Pauvolid-Corrêa, Anna Maria Vaira, Roy A. Hall, William Marciel de Souza, Thomas Briese, Felicity J. Burt, Valerian V. Dolja, Boris Klempa, Satu Hepojoki, Mengji Cao, Selma Gago-Zachert, Il-Ryong Choi, Rik L. de Swart, Jan Felix Drexler, Gabriel Robles Luna, Igor S. Lukashevich, Maria Minutolo, Amara Jambai, Nihal Buzkan, Steven B. Bradfute, Are Nylund, Ioannis E. Tzanetakis, Xiǎohóng Shí, Stephan Günther, Aura R. Garrison, Takahide Sasaya, Mart Krupovic, Victoria Wahl, Seiji Hongo, Matthew J. Ballinger, María A. Ayllón, Jonas Klingström, David M. Stone, Sead Sabanadzovic, Tracey Goldstein, George Fú Gāo, Aiah Gbakima, Norbert Nowotny, Vicente Pallás, Carina Andrea Reyes, W. Paul Duprex, Roger Hewson, Muhammad Zubair Shabbir, Sophie J. Smither, John V. Williams, Hans Peter Mühlbach, John Chamberlain, Yukio Shirako, Elke Mühlberger, Lies Laenen, Martin Beer, Jiànróng Lǐ, Giovanni P. Martelli, Gustavo Palacios, Sina Bavari, Natalya Yutin, Elena Dal Bó, Michele Digiaro, Jonathan A. Runstadler, John Hammond, Martin Schwemmle, Robert B. Tesh, Dirk Höper, Martin H. Groschup, Francesco Di Serio, Teemu Smura, Sheli R. Radoshitzky, Juliana Freitas-Astúa, Susan Payne, Dennis A. Bente, Anne Balkema-Buschmann, Adolfo García-Sastre, Eugene V. Koonin, Nicholas Di Paola, Bertus K. Rima, Mark D. Stenglein, Mohamed Hassan, Michela Chiumenti, Koray Ergünay, Patrick L. Di Bello, Ron A. M. Fouchier, Anna E. Whitfield, Toufic Elbeaino, Xin Yang, Nicole Mielke-Ehret, Jana Širmarová, Daniel Ruzek, Dàohóng Jiāng, Stanley L. Langevin, Sergey V. Netesov, Zhengli Shi, National Institute of Allergy and Infectious Diseases [Bethesda] (NIAID-NIH), National Institutes of Health [Bethesda] (NIH), Laboratoire de Ploufragan-Plouzané-Niort [ANSES], Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Unité des Virus Emergents (UVE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Virologie des archées - Archaeal Virology, Institut Pasteur [Paris], Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Institut Pasteur de Dakar, Réseau International des Instituts Pasteur (RIIP), Centre collaborateur de l'OMS Arbovirus et Fièvres Hémorragiques virales - Stratégies antivirales (CC-OMS), Institut Pasteur de Guinée, Les Mandinaux, 16450 Le Grand Madieu, This work was supported in part through Laulima Government Solutions, LLC prime contract with the US National Institute of Allergy and Infectious Diseases (NIAID) under Contract No. HHSN272201800013C. J.H.K. performed this work as an employee of Tunnell Government Services (TGS), a subcontractor of Laulima Government Solutions, LLC under Contract No. HHSN272201800013C. This project has been funded in whole or in part with federal funds from the National Cancer Institute (NCI), National Institutes of Health (NIH), under Contract No. 75N91019D00024, Task Order No. 75N91019F00130 to I.C., who was supported by the Clinical Monitoring Research Program Directorate, Frederick National Lab for Cancer Research, sponsored by NCI. This work was also funded in part by Contract No. HSHQDC-15-C-00064 awarded by the US Department of Homeland Security (DHS) Science and Technology Directorate (S&T) for the management and operation of The National Biodefense Analysis and Countermeasures Center (NBACC), a federally funded research and development center operated by the Battelle National Biodefense Institute (V.W.), and NIH contract HHSN272201000040I/HHSN27200004/D04 and grant R24AI120942 (N.V., R.B.T.). S.S. acknowledges partial support from the Special Research Initiative of Mississippi Agricultural and Forestry Experiment Station (MAFES), Mississippi State University, and the National Institute of Food and Agriculture, US Department of Agriculture, Hatch Project 1021494., We thank W. Ian Lipkin and Rafal Tokarz (Columbia University Irving Medical Center, New York, New York, USA) for providing/approving new names for 'blacklegged tick phleboviruses 1 and 3' and Edward Holmes (University of Sydney, Australia) for providing/approving a new name for 'Norway phlebovirus'. Many authors are current members of 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Study Groups: Arenaviridae (Jens H. Kuhn, Michael J. Buchmeier, Rémi N. Charrel, J. Christopher S. Clegg, Juan Carlos de la Torre, Jean-Paul J. Gonzalez, Stephan Günther, Mark D. Stenglein, Jussi Hepojoki, Manuela Sironi, Igor S. Lukashevich, Sheli R. Radoshitzky, Víctor Romanowski, Maria S. Salvato), Artoviridae (Jens H. Kuhn, Ralf G. Dietzgen, Dàohóng Jiāng, Nikos Vasilakis), Aspiviridae (John V. da Graça, Elena Dal Bó, Selma Gago-Zachert, María Laura García, John Hammond, Tomohide Natsuaki, José A. Navarro, Vicente Pallás, Carina A. Reyes, Gabriel Robles Luna, Takahide Sasaya, Ioannis Tzanetakis, Anna Maria Vaira, Martin Verbeek), Bornaviridae (Jens H. Kuhn, Thomas Briese, Ralf Dürrwald, Masayuki Horie, Timothy H. Hyndman, Norbert Nowotny, Susan Payne, Dennis Rubbenstroth, Mark D. Stenglein, Keizō Tomonaga), Bunyavirales (Jens H. Kuhn, Scott Adkins, Juan Carlos de la Torre, Sandra Junglen, Amy J. Lambert, Piet Maes, Marco Marklewitz, Gustavo Palacios, Takahide Sasaya, Yong-Zhen Zhang), Filoviridae (Jens H. Kuhn, Gaya K. Amarasinghe, Christopher Basler, Sina Bavari, Alexander Bukreyev, Kartik Chandran, Ian Crozier, Olga Dolnik, John M. Dye, Pierre B. H. Formenty, Anthony Griffiths, Roger Hewson, Gary Kobinger, Eric M. Leroy, Elke Mühlberger, Sergey V. Netesov, Gustavo Palacios, Bernadett Pályi, Janusz T. Pawęska, Sophie Smither, Ayato Takada, Jonathan S. Towner, Victoria Wahl), Fimoviridae (Michele Digiaro, Toufic Elbeaino, Giovanni P. Martelli, Nicole Mielke-Ehret, Hans-Peter Mühlbach), Hantaviridae (Steven Bradfute, Charles H. Calisher, Boris Klempa, Jonas Klingström, Lies Laenen, Piet Maes, Jin-Won Song, Yong-Zhen Zhang), Jingchuvirales (Nicholas Di Paola), Monjiviricetes (Jens H. Kuhn, Ralf G. Dietzgen, W. Paul Duprex, Dàohóng Jiāng, Piet Maes, Janusz T. Pawęska, Bertus K. Rima, Dennis Rubbenstroth, Peter J. Walker, Yong-Zhen Zhang), Mymonaviridae (María A. Ayllón, Dàohóng Jiāng, Shin-Yi L. Marzano), Nairoviridae (Jens H. Kuhn, Sergey V. Alkhovsky, Tatjana Avšič-Županc, Dennis A. Bente, Éric Bergeron, Felicity Burt, Nicholas Di Paola, Koray Ergünay, Aura R. Garrison, Roger Hewson, Ali Mirazimi, Gustavo Palacios, Anna Papa, Amadou Alpha Sall, Jessica R. Spengler), Negarnaviricota (Jens H. Kuhn, Eugene V. Koonin, Mart Krupovic, Yuri I. Wolf), Nyamiviridae (Jens H. Kuhn, Ralf G. Dietzgen, Dàohóng Jiāng, Nikos Vasilakis), Orthomyxoviridae (Justin Bahl, Inmaculada Casas, Adolfo García-Sastre, Seiji Hongo, Sergio H. Marshall, John W. McCauley, Gabriele Neumann, Colin R. Parrish, Daniel R. Pérez, Jonathan A. Runstadler, Martin Schwemmle), Paramyxoviridae (Anne Balkema-Buschmann, William G. Dundon, W. Paul Duprex, Andrew J. Easton, Ron Fouchier, Gael Kurath, Benhur Lee, Bertus K. Rima, Paul Rota, Lin-Fa Wang, Robobert A. Lamb), Peribunyaviridae (Scott Adkins, Sergey V. Alkhovsky, Martin Beer, Carol D. Blair, Charles H. Calisher, Michael A. Drebot, Holly R. Hughes, Amy J. Lambert, William Marciel de Souza, Marco Marklewitz, Márcio R. T. Nunes, Xiǎohóng Shí), Phasmaviridae (Matthew J. Ballinger, Roy A. Hall, Sandra Junglen, Stanley L. Langevin, Alex Pauvolid-Corrêa), Phenuiviridae (Thomas Briese, Rémi N. Charrel, Xavier De Lamballerie, Hideki Ebihara, George Fú Gāo, Martin H. Groschup, Márcio R. T. Nunes, Gustavo Palacios, Takahide Sasaya, Jin-Won Song), Pneumoviridae (Paul A. Brown, Ursula J. Buchholz, Rik L. de Swart, Jan Felix Drexler, W. Paul Duprex, Andrew J. Easton, Jiànróng Lǐ, Kirsten Spann, Natalie J. Thornburg, Bernadette van den Hoogen, John V. Williams), Rhabdoviridae (Kim R. Blasdell, Rachel Breyta, Ralf G. Dietzgen, Anthony R. Fooks, Juliana Freitas-Astúa, Hideki Kondō, Gael Kurath, Ivan V. Kuzmin, David M. Stone, Robert B. Tesh, Noël Tordo, Nikos Vasilakis, Peter J. Walker, Anna E. Whitfield), Sunviridae (Timothy H. Hyndman, Gael Kurath), Tenuivirus (Il-Ryong Choi, Gilda B. Jonson, Takahide Sasaya, Yukio Shirako, Tàiyún Wèi, Xueping Zhou), and Tospoviridae (Scott Adkins, Amy J. Lambert, Rayapati Naidu, Renato O. Resende, Massimo Turina, Anna E. Whitfield), or are ICTV Executive Committee Members: the 2017–2020 ICTV Chair of the Fungal and Protist Viruses Subcommittee (Peter Simmonds), the 2018–2020 ICTV Proposal Secretary (Peter J. Walker), the 2017–2020 ICTV Chair of the Plant Viruses Subcommittee (F. Murilo Zerbini), the 2017–2020 ICTV Chair of the Animal dsRNA and ssRNA- Viruses Subcommittee (Jens H. Kuhn), and 2017–2020 Elected Members (Sead Sabanadzovic, Arvind Varsani). We would like to thank Anya Crane (NIH/NIAID/DCR/IRF-Frederick) for critically editing the manuscript., NIH - National Institute of Allergy and Infectious Diseases (NIAID) (Estados Unidos), NIH - National Cancer Institute (NCI) (Estados Unidos), United State Department of Homeland Security (Estados Unidos), National Biodefense Analysis and Countermeasures Center (NBACC) (Estados Unidos), Battelle National Biodefense Institute, Mississippi Agricultural and Forestry Experiment Station (MAFES) (Estados Unidos), Mississippi State University (Estados Unidos), United States Department of Agriculture. National Institute of Food and Agriculture, Institut Pasteur [Paris] (IP), Virology, H Kuhn, Jen, Adkins, Scott, Alioto, Daniela, V Alkhovsky, Sergey, K Amarasinghe, Gaya, J Anthony, Simon, Avšič-Županc, Tatjana, A Ayllón, María, Bahl, Justin, Balkema-Buschmann, Anne, J Ballinger, Matthew, Bartonička, Tomáš, Basler, Christopher, Bavari, Sina, Beer, Martin, A Bente, Denni, Bergeron, Éric, H Bird, Brian, Blair, Carol, R Blasdell, Kim, B Bradfute, Steven, Breyta, Rachel, Briese, Thoma, A Brown, Paul, J Buchholz, Ursula, J Buchmeier, Michael, Bukreyev, Alexander, Burt, Felicity, Buzkan, Nihal, H Calisher, Charle, Cao, Mengji, Casas, Inmaculada, Chamberlain, John, Chandran, Kartik, N Charrel, Rémi, Chen, Biao, Chiumenti, Michela, Choi, Il-Ryong, S Clegg, J Christopher, Crozier, Ian, V da Graça, John, Dal Bó, Elena, R Dávila, Alberto M, Carlos de la Torre, Juan, de Lamballerie, Xavier, L de Swart, Rik, L Di Bello, Patrick, Di Paola, Nichola, Di Serio, Francesco, G Dietzgen, Ralf, Digiaro, Michele, V Dolja, Valerian, Dolnik, Olga, A Drebot, Michael, Felix Drexler, Jan, Dürrwald, Ralf, Dufkova, Lucie, G Dundon, William, Paul Duprex, W, M Dye, John, J Easton, Andrew, Ebihara, Hideki, Elbeaino, Toufic, Ergünay, Koray, Fernandes, Jorlan, R Fooks, Anthony, H Formenty, Pierre B, F Forth, Leonie, M Fouchier, Ron A, Freitas-Astúa, Juliana, Gago-Zachert, Selma, Fú Gāo, George, Laura García, María, García-Sastre, Adolfo, R Garrison, Aura, Gbakima, Aiah, Goldstein, Tracey, J Gonzalez, Jean-Paul, Griffiths, Anthony, H Groschup, Martin, Günther, Stephan, Guterres, Alexandro, A Hall, Roy, Hammond, John, Hassan, Mohamed, Hepojoki, Jussi, Hepojoki, Satu, Hetzel, Udo, Hewson, Roger, Hoffmann, Bernd, Hongo, Seiji, Höper, Dirk, Horie, Masayuki, R Hughes, Holly, H Hyndman, Timothy, Jambai, Amara, Jardim, Rodrigo, Jiāng, Dàohóng, Jin, Qi, B Jonson, Gilda, Junglen, Sandra, Karadağ, Serpil, E Keller, Karen, Klempa, Bori, Klingström, Jona, Kobinger, Gary, Kondō, Hideki, V Koonin, Eugene, Krupovic, Mart, Kurath, Gael, V Kuzmin, Ivan, Laenen, Lie, A Lamb, Robert, J Lambert, Amy, L Langevin, Stanley, Lee, Benhur, S Lemos, Elba R, M Leroy, Eric, Li, Dexin, Lǐ, Jiànróng, Liang, Mifang, Liú, Wénwén, Liú, Yàn, S Lukashevich, Igor, Maes, Piet, Marciel de Souza, William, Marklewitz, Marco, H Marshall, Sergio, P Martelli, Giovanni, R Martin, Robert, L Marzano, Shin-Yi, Massart, Sébastien, W McCauley, John, Mielke-Ehret, Nicole, Minafra, Angelantonio, Minutolo, Maria, Mirazimi, Ali, Mühlbach, Hans-Peter, Mühlberger, Elke, Naidu, Rayapati, Natsuaki, Tomohide, Navarro, Beatriz, A Navarro, José, V Netesov, Sergey, Neumann, Gabriele, Nowotny, Norbert, T Nunes, Márcio R, Nylund, Are, L Økland, Arnfinn, C Oliveira, Renata, Palacios, Gustavo, Pallas, Vicente, Pályi, Bernadett, Papa, Anna, R Parrish, Colin, Pauvolid-Corrêa, Alex, T Pawęska, Janusz, Payne, Susan, R Pérez, Daniel, Pfaff, Florian, R Radoshitzky, Sheli, Rahman, Aziz-Ul, L Ramos-González, Pedro, O Resende, Renato, A Reyes, Carina, K Rima, Bertu, Romanowski, Víctor, Robles Luna, Gabriel, Rota, Paul, Rubbenstroth, Denni, A Runstadler, Jonathan, Ruzek, Daniel, Sabanadzovic, Sead, Salát, Jiří, Alpha Sall, Amadou, S Salvato, Maria, Sarpkaya, Kamil, Sasaya, Takahide, Schwemmle, Martin, Z Shabbir, Muhammad, Shí, Xiǎohóng, Shí, Zhènglì, Shirako, Yukio, Simmonds, Peter, Širmarová, Jana, Sironi, Manuela, Smither, Sophie, Smura, Teemu, Song, Jin-Won, M Spann, Kirsten, R Spengler, Jessica, D Stenglein, Mark, M Stone, David, Straková, Petra, Takada, Ayato, B Tesh, Robert, J Thornburg, Natalie, Tomonaga, Keizō, Tordo, Noël, S Towner, Jonathan, Turina, Massimo, Tzanetakis, Ioanni, G Ulrich, Rainer, Maria Vaira, Anna, van den Hoogen, Bernadette, Varsani, Arvind, Vasilakis, Niko, Verbeek, Martin, Wahl, Victoria, J Walker, Peter, Wang, Hui, Wang, Jianwei, Wang, Xifeng, Wang, Lin-Fa, Wèi, Tàiyún, Wells, Heather, E Whitfield, Anna, V Williams, John, I Wolf, Yuri, Wú, Zhìqiáng, Yang, Xin, Yáng, Xīnglóu, Yu, Xuejie, Yutin, Natalya, Murilo Zerbini, F, Zhang, Tong, Zhang, Yong-Zhen, Zhou, Guohui, and Zhou., Xueping

Subjects
Species complex, MESH: Terminology as Topic, Biología, VÍRUS DE RNA, Biology, Article, 03 medical and health sciences, Biointeractions and Plant Health, V?rus / classifica??o, MESH: Mononegavirales, Genus, Virology, Terminology as Topic, Life Science, Bunyavirales, Ciencias Exactas, Taxonomy, 030304 developmental biology, Order Mononegavirales, 0303 health sciences, 030306 microbiology, Phylum, General Medicine, 15. Life on land, Negarnaviricota, Filogenia, Taxon, Evolutionary biology, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Taxonomy (biology), Mononegavirales
Abstract

In March 2020, following the annual International Committee on Taxonomy of Viruses (ICTV) ratification vote on newly proposed taxa, the phylum Negarnaviricota was amended and emended. At the genus rank, 20 new genera were added, two were deleted, one was moved, and three were renamed. At the species rank, 160 species were added, four were deleted, ten were moved and renamed, and 30 species were renamed. This article presents the updated taxonomy of Negarnaviricota as now accepted by the ICTV., La lista completa de autores que integran el documento puede consultarse en el archivo., Facultad de Ciencias Agrarias y Forestales, Centro de Investigaciones en Fitopatología, Facultad de Ciencias Exactas, Instituto de Biotecnologia y Biologia Molecular

Published
2020

247. Optophysiology: Depth-resolved probing of retinal physiology with functional ultrahigh-resolution optical coherence tomography.

Author

Bizheva, K., Pflug, R., Hermann, B., Považay, B., Sattmann, H., Qiu, P., Angers, E., Reitsamer, H., Popov, S., Taylor, J. R., Unterhuber, A., Ahnelt, P., and Drexler, W.

Subjects
*COHERENCE (Optics), *TOMOGRAPHY, *RETINA, *PHYSIOLOGY, *POSTERIOR segment (Eye), *OPTICS
Abstract

Noncontact, depth-resolved, optical probing of retinal response to visual stimulation with a <10-µm spatial resolution, achieved by using functional ultrahigh-resolution optical coherence tomography (fUHROCT), is demonstrated in isolated rabbit retinas. The method takes advantage of the fact that physiological changes in dark-adapted retinas caused by light stimulation can result in local variation of the tissue reflectivity. fUHROCT scans were acquired from isolated retinas synchronously with electrical recordings before, during, and after light stimulation. Pronounced stimulus-related changes in the retinal reflectivity profile were observed in the inner/outer segments of the photoreceptor layer and the plexiform layers. Control experiments (e.g., dark adaptation vs. light stimulation), pharmacological inhibition of photoreceptor function, and synaptic transmission to the inner retina confirmed that the origin of the observed optical changes is the altered physiological state of the retina evoked by the light stimulus. We have demonstrated that fUHROCT allows for simultaneous, non-invasive probing of both retinal morphology and function, which could significantly improve the early diagnosis of various ophthalmic pathologies and could lead to better understanding of pathogenesis. [ABSTRACT FROM AUTHOR]

Published
2006
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248. Stimulus-driven versus pilocarpine-induced biometric changes in pseudophakic eyes

Author

Kriechbaum, K., Findl, O., Koeppl, C., Menapace, R., and Drexler, W.

Subjects
*INTRAOCULAR lenses, *PILOCARPINE, *MUSCLE contraction, *CLINICAL trials
Abstract

Purpose: Most trials that study the lens movement of accommodative intraocular lens (IOLs) use pilocarpine to stimulate ciliary muscle contraction. The aim of this study is to assess in vivo whether a more physiologic, stimulus-driven accommodation is comparable to pilocarpine-induced IOL movement. Design: Controlled patient- and examiner-masked clinical trial. Participants: The study population included 38 eyes with accommodative IOL implants (1CU) and a control group of 28 eyes with conventional open-loop IOLs. Methods: A high-precision biometry technique, partial coherence interferometry, was used to measure IOL position. Anterior chamber depth was measured during physiologic (near point) and pharmacological (pilocarpine 2%) stimulation. In a subgroup of 14 1CU eyes, IOL position was determined repeatedly within 90 minutes after pilocarpine administration. A different subgroup was investigated as to the effect of cyclopentolate on IOL position. Best-corrected distance visual acuity (VA), best-corrected near VA, and distance-corrected near VA (DCNVA) were assessed using logarithm of the minimum angle of resolution charts. Main outcome measures: Anterior chamber depth change under pilocarpine and near-point–driven accommodation. Results: Near-point accommodation did not induce movement of either the accommodating 1CU or the control IOLs. Pilocarpine induced a 201±0.137-mm anterior movement of the 1CU IOL (P<0.001), compared with no movement within the control IOL groups (P>0.05). There was no significant (P>0.05) difference in DCNVA between the accommodative and open-loop IOLs. No correlation between near point– or pilocarpine-stimulated IOL movement and DCNVA was found. Concerning the time course of movement after pilocarpine administration, most of the 1CU IOLs showed some movement 30 minutes after application. Cyclopentolate-induced ciliary muscle relaxation caused a posterior IOL movement, as compared with the relaxed state, when focusing on a distant target. Conclusion: Pilocarpine-induced ciliary muscle contraction seems to overestimate IOL movement relative to a monocular near-driven stimulus. Therefore, concerning IOL movement, pilocarpine may act as a superstimulus and may not adequately simulate daily life performance of accommodative IOLs. However, it may be helpful to evaluate the maximum potential of an accommodating IOL. [Copyright &y& Elsevier]

Published
2005
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249. Generation of smooth, ultra-broadband spectra directly from a prism-less Ti:sapphire laser.

Author

Fuji, T., Unterhuber, A., Yakovlev, V.S., Tempea, G., Stingl, A., Krausz, F., and Drexler, W.

Subjects
*LASERS, *SPECTRUM analysis
Abstract

Discusses the generation of ultra-broad and smooth spectra from a mirror-dispersion-controlled Kerr-lens mode-locked titanium:sapphire lasers. Full width at half maximum of the spectrum; Evaluation of the pulse width; Use of interferometric autocorrelation.

Published
2003
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250. Technological verification of size-optimized 160-channel silicon nitride-based AWG-spectrometer for medical applications.

Author

Seyringer, Dana, Sagmeister, M., Maese-Novo, A., Eggeling, M., Rank, E., Muellner, P., Hainberger, R., Drexler, W., Vlaskovic, M., Zimmermann, H., Meinhardt, G., and Kraft, J.

Subjects
*OPTICAL properties, *SILICON
Abstract

We present the technological verification of a size-optimized 160-channel, 50-GHz silicon nitride-based AWG-spectrometer. The spectrometer was designed for TM-polarized light with a central wavelength of 850 nm applying our proprietary "AWG-Parameters" tool. For the simulations of AWG layout, the WDM PHASAR photonics tool from Optiwave was used. The simulated results show satisfying optical properties of the designed AWG-spectrometer. However, the high-channel count causes a large AWG size with standard design approaches. To solve this problem we designed a special taper enabling the reduction of AWG structure by about 15% while keeping the same optical properties. The AWG design was fabricated and the measured spectra not only confirm the proposed size-reduction but also the improvement of optical properties of the size-optimized AWG. [ABSTRACT FROM AUTHOR]

Published
2019
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