Results 41 to 50 of about 88,327 (313)

Experimental test of higher-order Laguerre–Gauss modes in the 10 m Glasgow prototype interferometer [PDF]

, 2013
Brownian noise of dielectric mirror coatings is expected to be one of the limiting noise sources, at the peak sensitivity, of next generation ground based interferometric gravitational wave (GW) detectors.
Barr, B.W., Bell, A.S., Bond, C., Carbone, L., Freise, A., Fulda, P.J., Hild, S., Huttner, S.H., Macarthur, J., Sorazu, B., Strain, K.A.   +10 more
core   +1 more source

Primary Topography-Guided LASIK: Treating Manifest Refractive Astigmatism Versus Topography-Measured Anterior Corneal Astigmatism.

Journal of refractive surgery, 2019
PURPOSE To investigate whether topography-guided laser in situ keratomileusis (LASIK) with anterior corneal astigmatism measured on the WaveLight Contoura (Alcon Laboratories, Inc., Fort Worth, TX) leads to better refractive outcomes compared to treating
A. Wallerstein, Mathieu Gauvin, S. R. Qi, M. Bashour, Mark Cohen   +4 more
semanticscholar   +1 more source

Correlation Between Stereoacuity and Experimentally Induced Graded Monocular and Binocular Astigmatism [PDF]

Journal of Clinical and Diagnostic Research, 2016
Introduction: Stereopsis, the highest grade of binocular single vision, is affected by various factors, such as mis-alignment of visual axes, refractive errors especially anisometropia and astigmatism, both of which may result in amblyopia. There are
Varsha Kulkarni, Neelam Puthran, Bhavna Gagal   +2 more
doaj   +1 more source

Modeling low order aberrations in laser guide star adaptive optics systems [PDF]

, 2007
When using a laser guide star (LGS) adaptive optics (AO) system, quasi-static aberrations are observed between the measured wavefronts from the LGS wavefront sensor (WFS) and the natural guide star (NGS) WFS.
Bouchez, Antonin H., Clare, Richard M., van Dam, Marcos A.   +2 more
core   +1 more source

Surgical approaches to correct corneal astigmatism at time of cataract surgery: a mini-review [PDF]

International Journal of Ophthalmology
Among refractive errors, astigmatism is the most common optical aberration, where refraction changes in different meridians of the eye. It causes blurred vision at any distance and includes corneal, lenticular, and retinal astigmatism.
Xiao-Lei Yin, Zhi-Yang Ji, Xiu-Xin Li, Xue-Mei Liang, Shu-Xing Ji   +4 more
doaj   +1 more source

Study of Prevalence of Preoperative Corneal Astigmatism in Patients with Senile Cataract at a Tertiary Care Institute in South India

Journal of Ophthalmology, 2022
Background. The prevalence of corneal astigmatism in patients with cataract has not been well documented in both rural and urban areas of Indian population. Purpose. The aim of this study was to assess prevalence of corneal astigmatism before cataract
C. Kumar Amruth, P. Ramya Deepthi, K. Sushma   +2 more
doaj   +1 more source

Goos-H\"anchen and Imbert-Fedorov shifts for astigmatic Gaussian beams

, 2015
In this work we investigate the role of the beam astigmatism in the Goos-H\"anchen and Imbert-Fedorov shift. As a case study, we consider a Gaussian beam focused by an astigmatic lens and we calculate explicitly the corrections to the standard formulas ...
Aiello, Andrea, Ornigotti, Marco
core   +1 more source

Generic Misalignment Aberration Patterns in Wide-Field Telescopes [PDF]

, 2011
Axially symmetric telescopes produce well known "Seidel" off-axis third-order aberration patterns: coma, astigmatism, curvature of field and distortion. When axial symmetry is broken by the small misalignments of optical elements, additional third-order ...
Levinson, Rebecca Sobel, Schechter, Paul L.   +1 more
core   +3 more sources

Analysis and interpretation of the Seidel aberration coefficients in digital holography [PDF]

, 2011
Peer reviewedPublisher ...
Champagne, Colomb, Colomb, Colomb, Haist, Hobson, Latta, Meier, Miccio, Vikram, Zhou   +10 more
core   +1 more source

The Impact of Posterior Corneal Astigmatism on Surgically Induced Astigmatism in Cataract Surgery

International Journal of General Medicine, 2022
Wenjie Liu,* Lichun Yang,* Jiewei Liu Cataract Department, Shanxi Eye Hospital, Taiyuan, Shanxi Province, People’s Republic of China*These authors contributed equally to this workCorrespondence: Jiewei Liu, Email jieweiliu1967@163.comPurpose:
Liu W, Yang L, Liu J
doaj