Results 21 to 30 of about 260,600 (296)
Journal of Ophthalmology, 2016 The aim of the study was to determine the level of agreement between Javal’s rule, autorefraction, retinoscopy, and refractive astigmatism and to determine which technique is the most suitable substitute when subjective refraction is not applicable using
Kofi Asiedu +2 more
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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
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Tunable negative refraction without absorption via electromagnetically induced chirality [PDF]
, 2007 We show that negative refraction with minimal absorption can be obtained by means of quantum interference effects similar to electromagnetically induced transparency.
D. M. Cook +4 more
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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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JAMA: The Journal of the American Medical Association, 1895 This is an age of prevention rather than of cure. The greatest efforts are being made to cure disease before disease occurs. Can anything more distinctly exemplify the disinterestedness of the physician than his earnest and unremitting efforts towards prophylactic medicine?
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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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