Results 71 to 80 of about 28,453 (274)

Health systems analysis of eye care services in Zambia: evaluating progress towards VISION 2020 goals. [PDF]

, 2014
BACKGROUND: VISION 2020 is a global initiative launched in 1999 to eliminate avoidable blindness by 2020. The objective of this study was to undertake a situation analysis of the Zambian eye health system and assess VISION 2020 process indicators on ...
Blanchet, K, Blanchet, K, Bozzani, FM, Bozzani, FM, Griffiths, UK, Griffiths, UK, Schmidt, E, Schmidt, E   +7 more
core   +3 more sources

Ladder‐Type Benzene‐Perylene Dyes with Efficient Laser Properties in the Near‐IR by Detracting/Activating Low/High Frequency Vibronic Modes

Advanced Functional Materials, EarlyView.
The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández, Álex Farrando Pérez, Fernando Gordillo Gámez, Pedro G. Boj, José M. Villalvilla, José A. Quintana, Yanpei Wan, Daniel Aranda, José Manuel Marín‐Beloqui, Jishan Wu, Zebing Zeng, María A. Díaz‐García, Juan Casado   +12 more
wiley   +1 more source

Combined Protocols for Corneal Collagen Cross-Linking with Photorefractive Surgery for Refractive Management of Keratoconus: Update on Techniques and Review of Literature

Ophthalmology and Therapy, 2019
With the development and gradual dissemination of corneal collagen cross-linking (CXL) in the twenty-first century as an early treatment for keratoconus, the management paradigm has shifted to include a greater focus on complete refractive correction for
Angela Y. Zhu, Albert S. Jun, Uri S. Soiberman   +2 more
doaj   +1 more source

Relative peripheral refraction across 4 meridians after orthokeratology and LASIK surgery [PDF]

, 2018
Background: To characterize the axial and off-axis refraction across four meridians of the retina in myopic eyes before and after Orthokeratology (OK) and LASIK surgery. Methods: Sixty right eyes with a spherical equivalent (M) between − 0.75 to − 5.25
González-Méijome, José Manuel, Lopes-Ferreira, Daniela, Queirós, A., Ramón Gutiérrez, Ángel, Sousa, Ana Amorim de, Villa-Collar, César   +5 more
core   +2 more sources

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Vision Related Quality of Life in Myopia; Photorefractive Keratectomy versus Nonsurgical Optical Correction

Journal of Ophthalmic & Vision Research, 2012
Purpose: To compare quality of life (QOL) in myopic patients who underwent photorefractive keratectomy (PRK) with that of myopic spectacle or contact lens users.
Hossein Ziaei, Marzieh Katibeh, Maryam Sabbaghi, Mehdi Yaseri, Armen Eskandari   +4 more
doaj  

Predictive factors for efficacy and safety in refractive surgery for myopia.

PLoS ONE, 2018
PURPOSE:To evaluate the predictive factors for safety and efficacy in laser refractive surgery for myopia. SETTING:A singular refractive surgery center, at a University-affiliated tertiary medical center. DESIGN:Retrospective cohort study.
Nir Gomel, Shay Negari, Joseph Frucht-Pery, Denise Wajnsztajn, Eyal Strassman, Abraham Solomon   +5 more
doaj   +1 more source

Refractive and surgical outcomes of scleral buckling with or without vitrectomy in primary pseudophakic retinal detachment [PDF]

International Journal of Ophthalmology
AIM: To report the refractive and surgical outcomes of scleral buckling (SB) with or without pars plana vitrectomy (PPV) in patients with pseudophakic rhegmatogenous retinal detachment (PRRD).
Yu-Ta Lin, Yung-Jen Chen
doaj   +1 more source

Stability of extemporaneously prepared ophthalmic solutions for mydriasis [PDF]

, 2018
Purpose Results of an evaluation of the physical and chemical stability of extemporaneously prepared adult and pediatric ophthalmic solutions containing combinations of phenylephrine, tropicamide, and cyclopentolate are reported.
Camp, Nicole A., Gilbert, Justine M., Hughes, Susan E., Nadra, Jennifer T., Zhao, Fang   +4 more
core   +2 more sources

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source