Results 61 to 70 of about 18,779 (258)

Optic nerve head topography and retinal structural changes in eyes with macrodisks: a comparative study with spectral domain optical coherence tomography

Clinical Ophthalmology, 2016
Zeynep Kayaarasi Öztürker, Kadir Eltutar, Belma Karini, Sezin Özdogan Erkul, Özen Ayrancı Osmanbaşoğlu, Pınar Sultan Ophthalmology Department, Istanbul Research and Training Hospital, Istanbul, Turkey Purpose: To compare optic nerve
Ozturker ZK, Eltutar K, Karini B, Erkul SO, Osmanbasoglu OA, Sultan P   +5 more
doaj  

FEATURE EXTRACTION OF RETINAL IMAGE FOR DIAGNOSIS OF ABNORMAL EYES [PDF]

ICTACT Journal on Image and Video Processing, 2011
Currently, medical image processing draws intense interests of scien- tists and physicians to aid in clinical diagnosis. The retinal Fundus image is widely used in the diagnosis and treatment of various eye diseases such as Diabetic Retinopathy, glaucoma
S. Praveenkumar
doaj  

Quality assessment of optic nerve disk images

Mokslas: Lietuvos Ateitis, 2010
Analysis of optic nerve disk is done for different categories of images. Optic nerve disk images of the same eye and of different eyes of good and bad quality are investigated using spectral, histogram, edge parameters.
Viktorija Puzienė, Darius Jegelevičius
doaj   +1 more source

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

Advanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang, Jinliang Lv, Yichun Lu, Hanfeng Ye, Xuan Zhang, Leonardo Cancellara, Nadezda Tarakina, Jiande Lin, Xin Gao, Oleksandr Savateev, Jiajia Cheng   +10 more
wiley   +1 more source

Ocular ultrasound findings in optic disk melanocytoma

Revista Mexicana de Oftalmología, 2017
Purpose: To describe the echographic characteristics of optic disk melanocytoma using a high resolution 10–20 MHz ophthalmic ultrasound. Methods: We conducted a 10-year retrospective review finding 9 cases with optic disk melanocytoma.
Andrés Lisker-Cervantes, David Arturo Ancona-Lezama, Luis Javier Arroyo-Garza, Jaime D. Martinez, Roberta Gomez Diaz Barreiro, Victor Daniel Valdepeña-López-Velarde, Virgilio Morales-Canton, Eduardo Moragrega-Adame   +7 more
doaj   +1 more source

Upconversion Nanoparticles Embedded Photonic Contact Lens for Transepithelial Corneal Crosslinking Using Hyaluronate – Riboflavin Conjugate

Advanced Functional Materials, EarlyView.
A minimally invasive, transepithelial corneal cross‐linking (TE‐CXL) approach is presented using upconversion nanoparticles (UCNPs)‐loaded contact lenses (UCLs), after topical delivery of hyaluronate–riboflavin conjugates. The NIR‐to‐UV/blue light conversion by UCNPs in a UCL can activate riboflavin for TE‐CXL, resulting in the biomechanical strength ...
Gibum Lee, Inhoo Choi, Anara Molkenova, Yengwoo Son, Seungmin Yang, Mina Kwon, Tae‐Im Kim, Ki Su Kim, Sei Kwang Hahn   +8 more
wiley   +1 more source

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

Advanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou, Matt P. Tudball, Yiming Guo, Bia Brandt, Adam Zucconi, Wenjia Du, Junfu Bu, Daniel H. C. Wan, Jianuo Chen, Emanuele Magliocca, Feng Ryan Wang, Alexander J.E. Rettie, Patrick S. Grant, Paul R. Shearing, Rhodri Jervis, Thomas S. Miller   +15 more
wiley   +1 more source

Laser‐Based Sculpturing of Embedded Ultrathin Metal‐Oxide Nanopores for Enhanced Biomolecular Sensing

Advanced Functional Materials, EarlyView.
Controlled laser‐drilling of embedded HfO2 membranes creates three layer nanopores with Gaussian‐shaped cavities sculptured in the supporting layers. These embedded solid‐state nanopores slow DNA translocation by 12‐fold compared to SiNx pores, enabling high‐resolution, label‐free detection of short DNAs, RNAs, and proteins.
Jostine Joby, Yulia Marom, Guocong Lin, Aleksandra Baron‐Wiechec, Amit Meller   +4 more
wiley   +1 more source

Bevacizumab for the treatment of a complicated posterior melanocytoma

Clinical Ophthalmology, 2015
Julio A Urrets-Zavalia,* Nicolas Crim,* Evangelina Esposito, Leandro Correa, M Eugenia Gonzalez-Castellanos, Dana MartinezDepartment of Ophthalmology, University Clinic Reina Fabiola, Universidad Catolica de Cordoba, Cordoba, Argentina*These authors ...
Urrets-Zavalia JA, Crim N, Esposito E, Correa L, Gonzalez-Castellanos ME, Martinez D   +5 more
doaj  

Comparative of OCT and OCTA parameters in patients with early chronic angle-closure glaucoma and early pituitary adenoma

Scientific Reports
Optical coherence tomography (OCT) and optical coherence tomography angiography (OCTA) have the potential application in evaluating pathological structural change of the optic nerve.
Zhi Tan, Kai-lun Lu, Wan-cheng Zhang, Shu-ying Peng, Xiu-juan Wen, Tong-tong Dai, Yan-hua Pang   +6 more
doaj   +1 more source