-
981
Optical, Mechanical and Electrical Characteristics of Thermal Uncooled Bolometric Type Detector Based on Vanadium Oxide
Published 2024-01-01“…The paper presents the results of optimization calculations by means of computer simulation of absorption, transmittance and reflection spectra of device structures of microbolometers based on thermosensitive vanadium oxide film by finite-difference time-domain method (FDTD). The characteristics of the investigated microbolometer structure were checked for compliance with mechanical and electrical requirements for this class of devices.…”
Get full text
Article -
982
Optical XOR logic gate design in two dimensional photonic crystal using ANN and PSO
Published 2025-07-01“…A dataset of 555 samples, obtained from the Finite-Difference Time-Domain (FDTD) method, is used to train the ANN model. …”
Get full text
Article -
983
Optical coherence tomography evaluation of retinal nerve fiber layer in longitudinally extensive transverse myelitis
Published 2011-02-01“…(p=0.04 and p=0.006, respectively). No significantly differences in other RNFL measurements were found. CONCLUSION: Patients with LETM may present localized RNFL loss, particularly on the nasal side of the optic disc, associated with slight visual field defects, even in the absence of previous episodes of optic neuritis. …”
Get full text
Article -
984
Optical Cavity Effects in InGaN Micro-Light-Emitting Diodes With Metallic Coating
Published 2017-01-01“…We implement finite difference method (FDM) to calculate the optical cavity effects in InGaN micro-light-emitting diodes (LEDs) with metallic coating. …”
Get full text
Article -
985
Inversion and Validation of Ocean Surface Bio-optical Parameters Using Multiplatform Ocean LiDAR
Published 2025-06-01“…This result provides an effective method for improving the reliability of profile inversion of bio-optical parameters in complex waters and performing error analysis.…”
Get full text
Article -
986
Ellipsometry of a one-dimensional photonic crystal with dielectric and conductive defects
Published 2025-08-01“…The latter uses a dielectric layer and a layer with finite conductivity. Methods. Spatial. The work uses the ellipsometric method for analyzing the optical properties of material media. …”
Get full text
Article -
987
Integrated Optical Filter Using Spiral-Based Cascaded Mach–Zehnder Interferometers
Published 2019-01-01“…The wavelength dependence and fabrication tolerance of coupling structures constructed in straight waveguides and bent waveguides were sufficiently analyzed by the finite-difference time-domain (FDTD) method. The results showed that the curved coupler possesses property of broadband with large fabrication tolerance. …”
Get full text
Article -
988
First Results after Implantation of Hydrophilic and Hydrophobic Trifocal Intraocular Lenses: Visual and Optical Performance
Published 2021-01-01“…Methods. Patients were bilaterally implanted with either the hydrophobic or the hydrophilic IOL. …”
Get full text
Article -
989
Keraring Intrastromal Segment Depth Measured by Spectral-Domain Optical Coherence Tomography in Eyes with Keratoconus
Published 2017-01-01“…The distance from the Keraring apex to the anterior corneal surface and the distance from the inner and the outer corners to the posterior corneal surface were measured 3 months postoperatively using spectral-domain optical coherence tomography. Agreement between measured distance and intended distance was assessed by calculating the absolute differences and 95% limits of agreement (95% LoA). …”
Get full text
Article -
990
Intravenous methylprednisolone versus oral prednisone for initial attacks of optic neuritis, A review of evidence
Published 2005-06-01“…Objective: To review current available evidence that addresses the question regarding the efficacy of intravenous methylprednisolone and oral-prednisone treatment regimens in improving vision among optic-neuritis patients. Methods: A literature search for randomized controlled trials on the treatment of optic neuritis in adults using steroids was conducted. …”
Get full text
Article -
991
Mandibular Kinematics on an Orthodontic Population Assessed with an Optical Jaw Tracking System: A Comparative Study
Published 2025-04-01“…<b>Objective</b>: To evaluate mandibular kinematics in an orthodontic population using the Modjaw<sup>®</sup> optical jaw tracking system. <b>Materials and methods</b>: A total of 154 orthodontic patients underwent mandibular kinematic analysis using the Modjaw<sup>®</sup> system. …”
Get full text
Article -
992
Spectral-Domain Optical Coherence Tomography of Preclinical Chloroquine Maculopathy in Egyptian Rheumatoid Arthritis Patients
Published 2015-01-01“…Methods. 40 left eyes of 40 female rheumatoid arthritis patients who received treatment chloroquine for more than one year were recruited in the study. …”
Get full text
Article -
993
Objective optical densitometry-based evaluation of longitudinal changes in the inflammatory process in the treatment of bacterial keratitis
Published 2025-06-01“…Results: At presentation and days 7 and 14 of treatment, the average median (interquartile range [IQR]) COD value for the affected eyes was 92.8 (55.6-99.6), 89.7 (51.1-97.3) and 80.6 (32.0-93.1) grayscale units (GSU), respectively (p < 0.05), indicating a decrease in inflammatory infiltration, and the average mean (SD) COD value for the control eyes was 19.6 ± 3.0, 19.9 ± 2.8, and 19.7 ± 2.6 GSU, respectively, with no statistically significant difference. Conclusion: The use of optical densitometry for monitoring corneal transparency in eyes treated for BK over a two-week period enabled objective recording of a gradual reduction in median (IQR) COD values in the affected eyes from 92.8 (55.6–99.6) to 80.6 (32.0–93.1) GSU, corresponding to an improvement in the clinical status of patients.…”
Get full text
Article -
994
Research on Association of the Diameter of the Internal Carotid Artery Siphon and Nonarteritic Anterior Ischaemic Optic Neuropathy
Published 2019-01-01“…To investigate the association of the diameter of the internal carotid artery siphon (ICAS) and nonarteritic anterior ischaemic optic neuropathy (NAION). Methods. Thirty patients clinically diagnosed with NAION (unilateral affected) who presented to Beijing Friendship Hospital from January 2017 to October 2018 were selected. …”
Get full text
Article -
995
Perception of Light Environment in University Classrooms Based on Parametric Optical Simulation and Virtual Reality Technology
Published 2025-07-01“…The analysis of eight virtual conditions (varying window-to-wall ratios and lighting methods) revealed that mixed lighting performed best in light perception, spatial perception, and overall evaluation. …”
Get full text
Article -
996
Peripapillary Microvascular Parameters in Unilateral Open-Angle Glaucoma Using the Optical Coherence Tomography-Angiography
Published 2022-12-01“…Objective: This study compared the peripapillary retinal nerve fiber layer (pRNFL) microangiographic properties [vessel area density (VAD) and blood flux index (BFI)] of unilateral open-angle glaucomatous eyes to contralateral eyes-at-risk, and to eyes of healthy age- and sex-matched subjects. Methods: This was a single-center, case-control study of Filipinos diagnosed with unilateral primary openangle glaucoma (POAG) or normal-tension glaucoma (NTG). …”
Get full text
Article -
997
Atrial fibrillation in retinal vascular occlusion disease and non-arteritic anterior ischemic optic neuropathy.
Published 2017-01-01“…<h4>Methods</h4>Prospective, observational single-center trial. …”
Get full text
Article -
998
Evaluation of a Portable Handheld Heterochromatic Flicker Photometer in Measuring Macular Pigment Optical Density
Published 2025-02-01“…<b>Background/Objectives:</b> Macular pigment optical density (MPOD) is an important clinical biomarker for ocular conditions like macular degeneration, diabetic eye disease, and digital eye strain. …”
Get full text
Article -
999
Retinal and Choroidal Thickness in relation to C-Reactive Protein on Swept-Source Optical Coherence Tomography
Published 2021-01-01“…To evaluate the relationships between C-reactive protein (CRP) and retinal and choroidal thickness by swept-source optical coherence tomography (SS-OCT). Methods. The participants included in the prospective cross-sectional study underwent a comprehensive ophthalmic examination. …”
Get full text
Article -
1000
Epithelialization of the anterior surface of the optic as a newly discovered problem of type I Boston Keratoprosthesis
Published 2025-06-01“…Methods: A retrospective study was implemented in North Eye Center in Hawler city, Kurdistan region, Iraq. …”
Get full text
Article