Results 111 to 120 of about 42,651 (303)

Accommodative Insufficiency: Prevalence, Impact and Treatment Options

Clinical Optometry, 2020
Jameel Rizwana Hussaindeen,1,2 Amirthaa Murali2 1Binocular Vision Clinic, Sankara Nethralaya, Unit of Medical Research Foundation, Sankara Nethralaya, Chennai 600006, India; 2Elite School of Optometry (in Collaboration with SASTRA Deemed University ...
Hussaindeen JR, Murali A
doaj  

Evaluating three different methods of determining addition in presbyopia

Journal of Ophthalmic & Vision Research, 2016
Purpose: To compare three different methods for determining addition in presbyopes. Methods: The study included 81 subjects with presbyopia who aged 40-70 years.
Negareh Yazdani, Abbas Azimi Khorasani, Hanieh Mirhajian Moghadam, Abbas Ali Yekta, Hadi Ostadimoghaddam, Javad Heravian Shandiz   +5 more
doaj   +1 more source

Anomalous Quasiparticle Reflection from the Surface of a $^3$He-$^4$He Dilute Solution

, 2017
A free surface of a dilute $^3$He-$^4$He liquid mixture is a unique system where two Fermi liquids with distinct dimensions coexist: a three-dimensional (3D) $^3$He Fermi liquid in bulk and a two-dimensional (2D) $^3$He Fermi liquid at the surface.
Choi, Hyoungsoon, Ikegami, Hiroki, Kim, Kitak, Kono, Kimitoshi, Monarkha, Yuriy P., Sato, Daisuke   +5 more
core   +1 more source

Organic Electrochemical Transistor Channel Materials: Copolymerization Versus Physical Mixing of Glycolated and Alkoxylated Polymers

Advanced Functional Materials, EarlyView.
This work discusses the use of blended channel materials in OECTs. It explores how mixing glycolated and alkoxylated polymers in various ratios offers a simpler and more efficient route to tuning OECT properties. The performance of the polymer blends is compared to the corresponding copolymers, demonstrating similar OECT characteristics, swelling ...
Lize Bynens, Kaishuai Zhang, Priscila Cavassin, Arwin Goossens, Jochen Vanderspikken, Tania C. H. Castillo, Demetra Tsokkou, Adam Marks, Arianna Magni, Karrie Weaver, Laurence Lutsen, Sahika Inal, Koen Vandewal, Natalie Banerji, Wouter Maes   +14 more
wiley   +1 more source

Accommodative amplitude using the minus lens at different near distances

Indian Journal of Ophthalmology, 2017
Purpose: The purpose of this study was to compare the mean findings and the repeatability of the minus lens (ML) amplitude of accommodation (AA) at 33 cm and 40 cm.
Hamed Momeni-Moghaddam, Jason S Ng, Bruno Mario Cesana, Abbas Ali Yekta, Mohammad Reza Sedaghat   +4 more
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

The distribution of negative and positive relative accommodation and their relationship with binocular and refractive indices in a young population

Journal of Current Ophthalmology, 2017
Purpose: To determine the distribution of negative relative accommodation (NRA) and positive relative accommodation (PRA) and its relationship with binocular vision indices in a young population.
AbbasAli Yekta, Hassan Hashemi, Mehdi Khabazkhoob, Hadi Ostadimoghaddam, Somayeh Ghasemi-moghaddam, Ebrahim Jafarzadehpur, Fereshteh Shokrollahzadeh   +6 more
doaj   +1 more source

Focused and defocused retinal images with Bessel and axicon pupil functions. [PDF]

, 2020
Retinal image light distributions in a standard optical model of a diffraction-limited eye with round pupils are presented for several patterns of amplitude and phase modulation of the light admitted into the eye.
Westheimer, Gerald
core  

Amplitude of accommodation and refractive error.

Investigative ophthalmology & visual science, 1986
This paper investigates the amplitude of accommodation of early onset myopes, late onset myopes, emmetropes, and hyperopes. Eighty subjects were used, 41 women and 39 men, with an age range of 18-22 yr (mean = 19.82). All subjects wore an optimum refractive correction, giving visual acuities of 20/20 or better.
N A, McBrien, M, Millodot
openaire   +1 more source