Modal Gain and Loss in Three-Layer Optical Waveguides by Nikhil Polley, Tso-Min Chou, Weida Zhang, Ethan Chou, Jerome K. Butler, Gary A. Evans

“…The derived analytical formulas showed excellent agreement with the results obtained from an accurate numerical approach for the gain and modal gain confinement factors for waveguides with small, medium, and large index differences. The formulae derived in this study can be useful for periodic optical waveguides, semiconductor lasers, optical amplifiers, distributed reflector lasers, optical waveguide isolators, and silicon photonic waveguides. …”
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Ultrasonography of Optic Nerve Sheath Diameter in Healthy Volunteers by Ariel Sosa Remón, Wilfredo Boch Rodríguez, Dasha María García Arias, Carmen Esther Remón Chávez, Ana Esperanza Jerez Álvarez, Arian Jesús Cuba Naranjo

“…In the simple linear regression analysis, only sex was associated with the value of the diameter of the optic nerve sheath (p= 0.000).<br /> <strong>Conclusions:</strong> in a population of healthy volunteers, the value of the diameter of the optic nerve sheath was similar to other descriptions, with differences between sex, which suggests taking this variable into consideration when making the measurement.…”
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Gut microbiota regulates optic nerve fiber myelination by Giulia Ronchi, Davide Pellegrino, Marwa El Soury, Olga Amato, Francesco Gaia, Sajjad Farzin, Raffaele Nuzzi, Marijana Basic, Silvia Bolsega, Stefano Geuna, Matilde Cescon, Kirsten Haastert-Talini, Kirsten Haastert-Talini, Giovanna Gambarotta

“…However, no data are available on the possible effect of the gut microbiota on the optic nerve fiber maturation and myelin development.MethodsWe investigated the impact of gut microbiota on the optic nerves collected from neonatal and young adult germ-free (GF), gnotobiotic (stably colonized with 12 bacteria strains, OMM12) and control (colonized with a complex gut microbiota, CGM) mice, by performing stereological and morphoquantitative analyses with transmission electron microscopy and gene expression analysis by quantitative real-time PCR.ResultsYoung adult GF and OMM12 optic nerve axons are smaller and hypermyelinated compared to CGM ones, while no such differences were detected in neonatal optic nerves. …”
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Electrophysiological markers of advanced stages of glaucomatous optic neuropathy by V. I. Kotelin, M. V. Zueva, I. V. Tsapenko, S. Yu. Petrov, A. N. Zhuravleva

“…Purpose: to determine the changes in electrophysiological parameters reflecting specific dysfunctions of retinal ganglion cells (RGCs) at advanced stages of glaucomatous optic neuropathy (GON).Material and methods. The study involved 35 patients (55 eyes) aged 51–76 (63.1 ± 7.7 years) with primary open-angle glaucoma (POAG), divided into two subgroups depending on POAG stages: developed (24 patients, 27 eyes) and advanced stages (24 patients, 28 eyes). …”
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Correlation between subfoveal choroidal thickness and optic nerve head changes using optical coherence tomography in cases of primary open-angle glaucoma by Mohamed M.S. Ahmed, Mahmoud A. Kamal, Mahmoud A.E. Hassan, Mahrous H.A.E. Shaheen

“…Patients and methods This is a cross-sectional observational case–control study. …”
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Macular thickness and vascular density assessment using optical coherence tomography and optical coherence tomography angiography imaging in iron ore mine personnel by Navid Faraji, Seyyed Pouria Tafti, Niloofar Khoshroo, Alireza Khoshrou, Elham Bakhtiari, Saeid Eslami, Nasser Shoeibi, Mohammad Reza Ansari Astaneh, Seyedeh Maryam Hosseini, Majid Abrishami, Hamid Reza Heidarzadeh, Parnian Arjmand, Mojtaba Abrishami

“…Abstract Background To assess macular anatomical and vascular parameters in individuals working in iron ore mines using Optical Coherence Tomography (OCT) and Optical Coherence Tomography Angiography (OCTA) imaging to explore potential correlations between this occupational exposure and retinal changes. …”
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Choroidopathy in patients with systemic lupus erythematosus using enhanced depth imaging spectral domain optical coherence tomography and optical coherence tomography angiography by Emine Gökçen Bayuk, Sibel Doğuizi, Abdulsamet Erden, Özlem Karakaş, Pınar Çakar Özdal

“…AIM: To evaluate the choroidopathy in patients with systemic lupus erythematosus (SLE) using enhanced depth imaging spectral domain optical coherence tomography (EDI SD-OCT) and optical coherence tomography angiography (OCTA). …”
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Broadband Antireflection Subwavelength Structures on Fused Silica Using Lower Temperatures Normal Atmosphere Thermal Dewetted Au Nanopatterns by Xin Ye, Jin Huang, Feng Geng, Laixi Sun, Hongjie Liu, Xiaodong Jiang, Weidong Wu, Xiaotao Zu, Wanguo Zheng

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The Effect of pH Solution in the Sol–Gel Process on the Process of Formation of Fractal Structures in Thin SnO₂ Films by Ekaterina Bondar, Igor Lebedev, Anastasia Fedosimova, Elena Dmitriyeva, Sayora Ibraimova, Anton Nikolaev, Aigul Shongalova, Ainagul Kemelbekova, Mikhail Begunov

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The Mechanical Properties of 6061-T6 Aluminum Alloy Joints Joined by MIG Welding Method (TPS/i) Using Different Shielding Gas Flow Rates by Faruk Varol, Sedat Dağlaraştı, Erman Ferik

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The 6Li(18O, 17O)7Li reaction mechanisms and 7Li + 17O potential by A. T. Rudchik, K. A. Chercas, A. A. Rudchik, E. I. Koshchy, S. Kliczewski, K. Rusek, V. A. Plujko, O. A. Ponkratenko, S. Yu. Mezhevych, Val. M. Pirnak, R. Sudak, J. Choiński, B. Czech, A. Szczurek

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A Single-Field Finite Difference Time-Domain Method Verified Using a Novel Antenna Design with an Artificial Magnetic Conductor Enhanced Structure by Yongjun Qi, Weibo Liang, Yilan Hu, Liang Zhang, Cheng You, Yuxiang Zhang, Tianrun Yan, Hongxing Zheng

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Beyond Green’s Functions: Inverse Helmholtz and “Om” <inline-formula><math display="inline"><semantics><mrow><mi mathvariant="normal">ॐ</mi></mrow></semantics></math></inline-formu... by Maxim Durach

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Diagnostic Accuracy of the Optical Coherence Tomography in Assessing Glaucoma Among Filipinos. Part 2: Optic Nerve Head and Retinal Nerve Fiber Layer Parameters by Noel de Jesus Atienza, MD, MSc, Joseph Anthony Tumbocon, MD

“…All ONH and RNFL OCT parameters showed statistically significant differences in mean values between the 2 groups. The ROC curve identified the vertical integrated rim area (AUC: 0.822), the cup-disc area ratio (AUC: 0.816), and the horizontal integrated rim width (AUC: 0.794) as the best optic disc parameters; and the RNFL average thickness (AUC: 0.827), the superior quadrant (AUC: 0.807), and the inferior quadrant (AUC: 0.804) as the best RNFL parameters. …”
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A Fading Suppression Method for Φ-OTDR Systems Based on Multi-Domain Multiplexing by Shuai Tong, Shaoxiong Tang, Yifan Lu, Nuo Yuan, Chi Zhang, Huanhuan Liu, Dao Zhang, Ningmu Zou, Xuping Zhang, Yixin Zhang

“…The principle of MDM is explained in detail, and an experimental system is established to test the fading noise suppression capabilities of different parameter combinations of the PDM, FDM, and SDM methods. …”
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The impacts of different eyes, individual differences, and different time points in healthy rats on the variability of visual electrophysiological examination indicators by Hong Chen, Yu Cheng, Ke Diao, YiFan Wang, Jing An, Haijiang Zhang, RongRong Li, Dan Zhang, SuMian Cheng, Minglian Zhang, LiFei Wang

“…PurposeThis article discussed the repeatability and coefficient of variation (CV) of flash visual evoked potential (FVEP) and full-field electroretinogram (ffERG) indicators of different eyes, individuals, and time points of normal male Sprague-Dawley rats, providing a reference for selecting a reasonable control scheme for retinal and optic nerve disease rat models.MethodsTwenty normal 6-8 week Sprague-Dawley rats were selected, from which 10 randomly chosen rats underwent ffERG examination and the other 10 underwent FVEP examination. …”
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McFarland Standards-Based Spectrophotometry Method for Calculating Approximate Multiplicity of Infection for an Obligate Intracellular Bacterium <i>Anaplasma phagocytophilum</i> by P. P. Mahesh, Jaydeep Kolape, Hameeda Sultana, Girish Neelakanta

“…The consistency of this method was also tested using the bacterial cultures grown at different times. …”
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Broadband Omnidirectional Nearly Perfect Plasmonic Absorber For Solar Energy Harvesting by Nihal F. F. Areed, Sameh Mohamed El Malt, Salah S. A Obayya

“…In this paper, an efficient, broadband, omnidirectional visible plasmonic absorber is presented and numerically simulated using the rigorous three-dimensional finite difference time domain (FDTD) method and the 2-D finite element method. …”
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Structure and Phase Composition and the Optical Properties of ZnO Coatings by О.P. Kul’ment’eva, А.A.-K.М. Muhammed, A.I. Kul’ment’ev

“…This paper presents the results of experimental investigation of the structure, phase composition and optical properties of ZnO coatings produced at different temperatures by the chemical deposition method from the vapor phase.…”
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Evaluate the argon plasma jet parameters by optical emission spectroscopy by Harakat Mohsin Roomy, N. Yasoob A., Hamid H. Murbat

“…This study is based on optical emission spectroscopy (OES). Spectroscopic diagnostic method using the Boltzmann plot to calculate these parameters measured. …”
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