Results 31 to 40 of about 330,519 (320)

Nonlinear interfaces: intrinsically nonparaxial regimes and effects [PDF]

, 2009
The behaviour of optical solitons at planar nonlinear boundaries is a problem rich in intrinsically nonparaxial regimes that cannot be fully addressed by theories based on the nonlinear Schrödinger equation.
Boardman A D, Chamorro-Posada P, Chamorro-Posada P, Christian J M, Graham S McDonald, Julio Sánchez-Curto, Kaplan A E, Nesterov L A, Nesterov L A, Pedro Chamorro-Posada, Zakharov V E   +10 more
core   +2 more sources

Dynamic Refraction Stereo [PDF]

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2005
In this paper we consider the problem of reconstructing the 3D position and surface normal of points on an unknown, arbitrarily-shaped refractive surface. We show that two viewpoints are sufficient to solve this problem in the general case, even if the refractive index is unknown. The key requirements are 1) knowledge of a function that maps each point
Nigel J W, Morris, Kiriakos N, Kutulakos
openaire   +2 more sources

Essential Infantile Esotropia: A Course of Treatment From Our Experience

Frontiers in Pediatrics, 2021
Background: Essential infantile esotropia (EIE) is the most common type of childhood esotropia. Although its classical approach is surgical, less invasive techniques have been proposed as an adjunct or alternative to traditional surgery.
Stefano Pensiero, Laura Diplotti, Marianna Presotto, Luca Ronfani, Egidio Barbi, Egidio Barbi   +5 more
doaj   +1 more source

Refraction in exoplanet atmospheres: Photometric signatures, implications for transmission spectroscopy, and search in Kepler data

, 2017
Refraction deflects photons that pass through atmospheres, which affects transit light curves. Refraction thus provides an avenue to probe physical properties of exoplanet atmospheres and to constrain the presence of clouds and hazes.
B.-O. Demory, Benneke, Berta-Thompson, Bétrémieux, Bétrémieux, Bétrémieux, Bétrémieux, Bétrémieux, Charbonneau, Claret, D. Alp, Dalba, Demory, Demory, Fressin, García Muñoz, Gillon, Hippke, Hubbard, Huber, Hui, Jenkins, Kaltenegger, Kipping, Koch, Luger, Mandel, Misra, Misra, Robitaille, Seager, Seiff, Sheets, Sidis, Smith, Stumpe, Sudarsky, Weiss, Witteborn   +38 more
core   +1 more source

Implications of Atmospheric Differential Refraction for Adaptive Optics Observations [PDF]

, 2002
Many adaptive optics systems operate by measuring the distortion of the wavefront in one wavelength range and performing the scientific observations in a second, different wavelength range.
Roe, Henry G.
core   +2 more sources

Large negative lateral shifts due to negative refraction [PDF]

, 2011
When a thin structure in which negative refraction occurs (a metallo-dielectric or a photonic crystal) is illuminated by a beam, the reflected and transmitted beam can undergo a large negative lateral shift.
Antoine Moreau, Benedicto, Bretenaker, Emmanuel Centeno, Felbacq, Gralak, He, Jessica Benedicto, Kong, Krayzel, Laroche, Moreau, Moreau, Paul, Pillon, Rémi Pollès, Scalora, Shadrivov, Tamir, Wang   +19 more
core   +3 more sources

Creating materials with a desired refraction coefficient [PDF]

, 2009
A method is given for creating material with a desired refraction coefficient. The method consists of embedding into a material with known refraction coefficient many small particles of size $a$.
A. G. RAMM, Kozlov S., Marchenko V., Ramm A. G., Ramm A. G., Ramm A. G., Ramm A. G., Ramm A. G., Ramm A. G.   +8 more
core   +12 more sources

Evidence for a secondary bow in Newton's zero-order nuclear rainbow [PDF]

, 2014
Rainbows are generally considered to be caused by static refraction and reflection. A primary and a secondary rainbow appear due to refraction and internal reflection in a raindrop as explained by Newton.
Hirabayashi, Y., Ohkubo, S.
core   +2 more sources

A comparative study of knotless versus knotted transscleral suture-fixated intraocular lens implantation

Indian Journal of Ophthalmology, 2022
Purpose: To compare functional outcomes and complication rates of two scleral fixated intraocular lens implantation (SFIOL) techniques. Methods: In this retrospective study, there were 30 eyes of 30 patients who underwent SFIOL implantation for ...
Sami Yilmaz, Aysegul Mavi Yildiz, Remzi Avci   +2 more
doaj   +1 more source

Non-traumatic bilateral corneal flap dislocation 20 years after LASIK

BMC Ophthalmology
Backgroud This report describes a case of late non-traumatic dislocation of bilateral corneal flaps, occurring 20 years after LASIK surgery. Case presentation A 52-year-old woman underwent LASIK surgery on both eyes 20 years ago.
Dakun Ren, Xiangrong Xie, Xingtong Wang, Xuming Guo   +3 more
doaj   +1 more source