Results 61 to 70 of about 2,494,174 (257)

Contact lens rehabilitation following repaired corneal perforations

BMC Ophthalmology, 2006
Background Visual outcome following repair of post-traumatic corneal perforation may not be optimal due to presence of irregular keratometric astigmatism.
Sreenivas V, Sharma Namrata, Sinha Rajesh, Titiyal Jeewan S, Vajpayee Rasik B   +4 more
doaj   +1 more source

Anisotropic Phonon Dynamics and Directional Transport in Actinide Van der Waals Semiconductor Uranium Triselenide

Advanced Functional Materials, EarlyView.
USe3 is introduced as an actinide van der Waals semiconductor that mirrors the quasi‐one‐dimensional physics of transition‐metal trichalcogenides. Polarization‐resolved Raman spectroscopy on exfoliated flakes maps strong in‐plane phonon anisotropy and strain‐tunable mode shifts.
Aljoscha Söll, Valentino Jadriško, Sourav Dey, Nassima Benchtaber, Kalyan Sarkar, Borna Radatović, Jan Luxa, Fedor Lipilin, Kseniia Mosina, Vojtěch Kundrát, Jakub Zalesak, Jana Vejpravová, Martin Žáček, Szymon J. Zelewski, Nikolas Antonatos, Christoph Gadermaier, José J. Baldoví, Zdeněk Sofer   +17 more
wiley   +1 more source

Evaluation of the microstructure of cornea by in vivo confocal microscopy in contact lens wearing and non-contact lens wearing keratoconus patients

, 2010
Purpose: To compare the microstructure of the central keratoconic cornea in contact lens wearing and non-contact lens wearing keratoconus ...
Yilmaz, Senay, Bilgin, Lale Kozer, Yeniad, Baris   +2 more
core   +1 more source

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Soft contact lens fitting after intrastromal corneal ring segment implantation to treat keratoconus

, 2014
Received 3 December 2013, Revised 1 June 2014, Accepted 4 June 2014, Available online 9 July 2014PURPOSE: To assess the feasibility of fitting a lathed soft toric contact lens (STCL) after the implant of intrastromal corneal ring segments (ICRSs) to ...
Cuiña Sardiña, Ricardo, Carballo Álvarez, Jesús, Puell Marín, María Cinta, Benítez Del Castillo Sánchez, José Manuel, Vázquez Molini, José María, Díaz Valle, David   +5 more
core   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

Advanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali, Jixin Zheng, Satoshi Wakai, Jie Liu, Hidetaka Nomaki, Misato Tsukatani, Noriyuki Isobe, Jingcheng Sang, Yuriko Aoki, Hideo Okamura, Daisuke Sasaki, Chiaki Ogino, Yuzo Yamazaki, Takashi Nishikaze, Kenji Takada, Maiko K. Okajima, Tatsuo Kaneko   +16 more
wiley   +1 more source

Refractive Error and visual acuity changes during contact lens wear [PDF]

, 1975
As part of a project in which various ocular parametrs are followed during the first three months of contact lens wear, refractive eror and visual acuity changes are described for the total sample and for three groups wearing differently fitting lenses ...
Carney, Leo G.
core  

Contact lens correction of presbyopia

, 2009
The ageing population highlights the need to provide effective optical solutions for presbyopic contact lens wearers. However, data gathered from annual contact lens fitting surveys demonstrate that fewer than 40% of contact lens wearers over 45 years of
Morgan, Phillip B., Morgan, Philip B., Efron, Nathan   +2 more
core   +1 more source

Bacterial contamination in contact lens training area in private optical clinics

Journal of Ophthalmic Inflammation and Infection
Background Contamination in the contact lens training area could be due to bacteria, which can lead to the major consequence of ocular infections. We aimed to investigate the contamination caused by bacteria in the contact lens training area in private ...
Sana Badar Baig, Kalaivani Manokaran, Nagarajan Theruveethi, Vivek Raghavan Muduthan   +3 more
doaj   +1 more source

Short-term corneal changes with gas-permeable contact lens wear in keratoconus subjects: A comparison of two fitting approaches

Journal of Optometry, 2015
Purpose: To evaluate changes in anterior corneal topography and higher-order aberrations (HOA) after 14-days of rigid gas-permeable (RGP) contact lens (CL) wear in keratoconus subjects comparing two different fitting approaches.
Miguel Romero-Jiménez, Jacinto Santodomingo-Rubido, Patricia Flores-Rodríguez, Jose-Manuel González-Méijome   +3 more
doaj   +1 more source