Results 171 to 180 of about 29,655 (227)

Repeat-Pass SAR Interferometry With Partially Coherent Targets

IEEE Transactions on Geoscience and Remote Sensing, 2012
By means of the permanent scatterer (PS) technique, repeated spaceborne synthetic aperture radar (SAR) images with relatively low resolution (about 25 m × 5 m for the European Remote Sensing (ERS) and Envisat satellites) can be used to estimate the displacement (1-mm precision) and 3-D location (1-m precision) of targets that show an unchanged ...
Daniele Perissin, Teng Wang
openaire   +1 more source

Outcomes of IOL power calculation using measurements by a rotating Scheimpflug camera combined with partial coherence interferometry.

Journal of cataract and refractive surgery, 2020
PURPOSE To evaluate the accuracy of the measurements provided by a Scheimpflug camera combined with partial coherence interferometry for intraocular lens (IOL) power calculation. SETTING I.R.C.C.S - G.B. Bietti Foundation, Rome, Italy.
Leonardo Taroni, K. Hoffer, P. Barboni, Domenico Schiano-Lomoriello, G. Savini   +4 more
semanticscholar   +1 more source

Agreement Between Two Optical Biometers Based on Large Coherence Length SS-OCT and Scheimpflug Imaging/Partial Coherence Interferometry.

Journal of refractive surgery, 2020
PURPOSE To evaluate the agreement between measurements obtained with a new optical biometer (Argos; Movu Inc) using large coherence length swept-source optical coherence tomography (SS-OCT) and those obtained with an optical biometer with a rotating ...
Ruixue Tu, Jinjin Yu, G. Savini, Junming Ye, Rui Ning, J. Xiong, Sisi Chen, Jinhai Huang   +7 more
semanticscholar   +1 more source

Preoperative biometry of cataractous eyes using partial coherence laser interferometry

Graefe's Archive for Clinical and Experimental Ophthalmology, 2003
Preoperative measurement of the axial length of the eye is of utmost importance in cataract surgery to determine the relationship between the refractive power of the intraocular lens to be implanted and the postoperative refractive error of the eye.
Stefan, Häsemeyer, Philipp, Hugger, Jost B, Jonas   +2 more
openaire   +2 more sources

Comparison of Two Partial Coherence Interferometry Devices for Ocular Biometry

Klinische Monatsblätter für Augenheilkunde, 2010
An estimation of the repeatability of the Lenstar LS 900 biometry parameters and comparison of these measurements to those evaluated with the IOLMaster were carried out.Axial length, corneal curvature, anterior chamber depth, central corneal thickness and lens thickness measurements were performed in 145 eyes using the Lenstar LS 900, while axial ...
Z, Liampa, M, Kynigopoulos, G, Pallas, H, Gerding   +3 more
openaire   +2 more sources

Improved prediction of intraocular lens power using partial coherence interferometry

Journal of Cataract and Refractive Surgery, 2001
To evaluate the feasibility of using a new optical biometry technique, dual-beam partial coherence interferometry (PCI), to improve intraocular lens (IOL) power prediction in cataract surgery.Department of Ophthalmology, Vienna General Hospital, and Institute of Medical Physics, University of Vienna, Vienna, Austria.Preoperative axial length (AL) data ...
O, Findl, W, Drexler, R, Menapace, H, Heinzl, C K, Hitzenberger, A F, Fercher   +5 more
openaire   +2 more sources

Level of agreement of intraocular lens power measurements between an image-guided system and partial coherence interferometry.

Journal of cataract and refractive surgery, 2020
PURPOSE To evaluate the level of agreement of partial coherence interferometry (IOLMaster) and an image-guided system (Verion) in terms of keratometric values and intraocular lens (IOL) power calculation. SETTING Department of Ophthalmology, University
G. Labiris, Eirini-Kanella Panagiotopoulou, Panagiota Ntonti, M. Gkika, Aristeidis Konstantinidis, I. Perente, D. Dardabounis, K. Ioannakis   +7 more
semanticscholar   +1 more source

Evaluation of Corneal Curvature and Astigmatism in Patients with Persistent Pupillary Membrane by Partial Coherence Interferometry Measurements

Ophthalmic Research, 2020
Purpose: To evaluate and compare the corneal curvature and astigmatism in patients with persistent pupillary membrane (PPM) and healthy controls by partial coherence interferometry.
Huiling Hu, Mingmin Yang, Bing Du, Min Fang, Xin-Hua Liu, Jiantao Wang   +5 more
semanticscholar   +1 more source

High precision biometry of pseudophakic eyes using partial coherence interferometry

Journal of Cataract and Refractive Surgery, 1998
To investigate the applicability of the scanning version of dual-beam partial coherence interferometry (PCI) for measuring the anterior segment and axial length of pseudophakic eyes in a clinical setting and to determine the achievable precision with this biometry technique.Department of Ophthalmology, Vienna General Hospital, and Institute of Medical ...
O, Findl, W, Drexler, R, Menapace, C K, Hitzenberger, A F, Fercher   +4 more
openaire   +2 more sources

Speckle interferometry for a partially-coherent source

1979 Antennas and Propagation Society International Symposium, 2005
Abstract : We have obtained the spatial frequency transfer function for speckle interferometry for the case when the source is partially coherent (spatially) and can be approximated by the quasi-stationary model. The transfer function has been examined, and relatively simple approximations to it have been found for the limiting cases of low and high ...
openaire   +1 more source