Results 21 to 30 of about 330,519 (320)
British Journal of Ophthalmology, 1999 This article presents an overview of the terms used in laser refractive surgery and identifies the benefits, outcomes, complications and shortcomings of these procedures. Even though it is 'fashionable' to have these procedures done, they are still largely experimental. Although there are benefits from these procedures, thorough screening and selection
openaire +4 more sources
Effects of age and Refractive Errors on Stereopsis
Türk Oftalmoloji Dergisi, 2011 Pur po se: To investigate the effects of age and refractive errors on stereopsis. Ma te ri al and Met hod: The present study included 1488 cases which were randomly selected, had full vision and no eye pathology except refractive errors.
Aykut Arslan Yıldız +1 more
doaj +1 more source
Free Space Optical Polarization De-multiplexing and Multiplexing by means of Conical Refraction [PDF]
, 2012 Polarization de-multiplexing and multiplexing by means of conical refraction is proposed to increase the channel capacity for free space optical communication applications.
Kalkandjiev, Todor K. +3 more
core +3 more sources
Wave Trajectory Study on the Coast of Lhoknga, Aceh Besar, Indonesia: A Numerical Model Approach
Civil Engineering Dimension, 2018 A numerical model of wave trajectory using shoaling and refraction formula was proposed in the coastal waters of Lhoknga, Aceh Besar, Indonesia. The developed model used a two dimensional (2D) numerical methods for wave trajectory with the input of wave ...
Ichsan Setiawan, Mohammad Irham
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Numerical simulations of negative-index refraction in wedge-shaped metamaterials [PDF]
, 2005 A wedge-shaped structure made of split-ring resonators (SRR) and wires is numerically simulated to evaluate its refraction behavior. Four frequency bands, namely, the stop band, left-handed band, ultralow-index band, and positive-index band, are ...
H. Liu +5 more
core +1 more source
Uniform refraction in negative refractive index materials [PDF]
Journal of the Optical Society of America A, 2015 We study the problem of constructing an optical surface separating two homogeneous, isotropic media, one of which has a negative refractive index. In doing so, we develop a vector form of Snell's law, which is used to study surfaces possessing a certain uniform refraction property, both in the near and far field cases. In the near field problem, unlike
Stachura, Eric, Gutirrez, Cristian E.
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Short-term refractive and ocular parameter changes after topical atropine
Taiwan Journal of Ophthalmology, 2020 PURPOSE: The purpose of this study is to explore short-term refractive and ocular parameter changes and their correlations after cycloplegia with atropine.
Min-Chieh Ho +4 more
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Controlling Refraction Using Sub-Wavelength Resonators
Applied Sciences, 2018 We construct metamaterials from sub-wavelength nonmagnetic resonators and consider the refraction of incoming signals traveling from free space into the metamaterial.
Yue Chen, Robert Lipton
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Российский офтальмологический журнал, 2020 Purpose. To study refractive indices in children with a predisposition to myopia and hyperopia after congenital cataract extraction and IOL implantation.Material and methods.
L. S. Khamraeva +3 more
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EFFECT OF SOLAR ECLIPSES ON RADIOWAVE PROPAGATION IN THE TROPOSPHERE [PDF]
Радиофизика и электроника, 2015 Energy of solar eclipses significantly influences the variation of geophysical fields and leads to a change of processes in the subsystems of the Earth and to disturbance of the existing interactions between them. Observations of each solar eclipse allow
I. M. Mytsenko, D. D. Khalameyda
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