Results 131 to 140 of about 2,132 (158)
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Journal of Cataract and Refractive Surgery, 2003
To compare and contrast axial length (AL) measurements assessed by ultrasound biometry and optical biometry.Department of Ophthalmology, Johannes Gutenberg-University, Mainz, Germany.Optical biometry and ultrasound biometry were performed in 360 eyes to measure AL.In eyes with a clear-appearing crystalline lens, there was a statistically significant ...
Mana, Tehrani +3 more
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To compare and contrast axial length (AL) measurements assessed by ultrasound biometry and optical biometry.Department of Ophthalmology, Johannes Gutenberg-University, Mainz, Germany.Optical biometry and ultrasound biometry were performed in 360 eyes to measure AL.In eyes with a clear-appearing crystalline lens, there was a statistically significant ...
Mana, Tehrani +3 more
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Preoperative biometry of cataractous eyes using partial coherence laser interferometry
Graefe's Archive for Clinical and Experimental Ophthalmology, 2003Preoperative 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 +2 more
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Improved prediction of intraocular lens power using partial coherence interferometry
Journal of Cataract and Refractive Surgery, 2001To 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 +5 more
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High precision biometry of pseudophakic eyes using partial coherence interferometry
Journal of Cataract and Refractive Surgery, 1998To 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 +4 more
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A Partial Coherent Interferometry for measuring the thickness of a dynamic liquid sheet
International Journal of Multiphase Flow, 2019Abstract This work presents a non-invasive technique, Partial Coherent Interferometry, for measuring the thickness distribution of a dynamic liquid sheet. It utilizes the linear relationship between the degree of coherence and the optical path difference to determine the thickness of the sheet. In an interferometer using a partial coherent laser, the
Weixiao Shang, Jun Chen
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Biometry of cataractous eyes using partial coherence interferometry
Journal of Cataract and Refractive Surgery, 2002To evaluate the clinical feasibility of the prototype version of a commercial partial coherence interferometry instrument (axial length measurement, ALM, Carl Zeiss Jena) for noninvasive, high-precision biometry in cataractous eyes.Department of Ophthalmology, Vienna General Hospital, and Institute of Medical Physics, University of Vienna, Austria.The ...
Barbara, Kiss +6 more
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Comparison of AL-Scan and IOLMaster 500 Partial Coherence Interferometry Optical Biometers
Journal of Refractive Surgery, 2016PURPOSE: To investigate agreement between the ocular biometry measurements provided by a newer optical biometer, the AL-Scan (Nidek Co, Ltd., Gamagori, Japan) and those provided by the IOLMaster 500 (Carl Zeiss Meditec, Jena Germany), which are both based on partial coherence interferometry ...
Kenneth J, Hoffer, Giacomo, Savini
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Journal of Cataract and Refractive Surgery, 2007
To evaluate anterior segment alterations with age and during accommodation in different age groups.Department of Ophthalmology, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.Fifty-three subjects (101 normal eyes) were enrolled in this study and divided into 3 age groups: younger than 30 years (Group 1), between 31 years ...
Alexis, Tsorbatzoglou +4 more
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To evaluate anterior segment alterations with age and during accommodation in different age groups.Department of Ophthalmology, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.Fifty-three subjects (101 normal eyes) were enrolled in this study and divided into 3 age groups: younger than 30 years (Group 1), between 31 years ...
Alexis, Tsorbatzoglou +4 more
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Partially coherent illumination in lateral shearing interferometry
2018This thesis discusses the influence of a special spatially extended light source in lateral shearing interferometry, both in the two-beam case and for speckle interferometry. In particular, the use of diffractive elements is emphasized, whereby intrinsic errors of the experimental setups can be kept low and at the same time a high degree of flexibility
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