Results 61 to 70 of about 16,042 (270)

Atmospheric aerosol measurements by employing a polarization scheimpflug lidar system

EPJ Web of Conferences, 2018
A polarization Scheimpflug lidar system based on the Scheimpflug principle has been developed by employing a compact 808-nm multimode highpower laser diode and two highly integrated CMOS sensors in Dalian University of Technology (DLUT), Dalian, China ...
Mei Liang, Guan Peng, Yang Yang
doaj   +1 more source

Clinical and material degradations of intraocular lenses: A review [PDF]

, 2019
Purpose: To review the published scientific literature concerning clinical and material degradations of intraocular lenses after implantation in cataract surgery.
Hull, C., O’Brart, D. P. S., Stanojcic, N.   +2 more
core   +1 more source

Small Angle Scattering Intensity Measurement by an Improved Ocean Scheimpflug Lidar System

Remote Sensing, 2021
Quantification of the horizontal patterns of phytoplankton and the distribution of suspended particles across the sea’s surface has been greatly improved by traditional passive oceanic color remote sensing technology.
Hongwei Zhang, Yuanshuai Zhang, Ziwang Li, Bingyi Liu, Bin Yin, Songhua Wu   +5 more
semanticscholar   +1 more source

Scheimpflug imaging for keratoconus and ectatic disease

Indian Journal of Ophthalmology, 2013
Scheimpflug cross-sectioning anterior segment imaging offers significant advantages over traditional placido based curvature analysis and ultrasound pachymetry. The accurate measurement of both the anterior and posterior corneal surfaces and the anterior and posterior lens allows for the creation of a three-dimensional reconstruction of the anterior ...
Michael W Belin, Renato Ambrósio
openaire   +3 more sources

Astigmatic changes after Descemet membrane endothelial keratoplasty (DMEK) in decompensated penetrating keratoplasty grafts

Acta Ophthalmologica, EarlyView.
Abstract Purpose To evaluate the surgery‐induced changes of astigmatism after Descemet membrane endothelial keratoplasty (DMEK) in eyes with failed previous penetrating keratoplasty (PK). Design Retrospective, interventional cohort study based on prospective DMEK database.
Florian Thomas Steinberg, Jithmi Weliwitage, Marie von Berg, Silvia Schrittenlocher, Simona Schlereth, Claus Cursiefen, Björn Bachmann   +6 more
wiley   +1 more source

Repeatability of keratometry depending on tear film osmolarity

Acta Ophthalmologica, EarlyView.
Abstract Purpose To determine the repeatability of keratometry and astigmatism measurements of patients depending on the tear film osmolarity using three different devices. Methods In this study, 97 eyes of 97 patients with a mean age of 64.92 ± 12.07 years received three repeated measurements with the IOLMaster 700 (Carl Zeiss Meditec, Jena, Germany),
David Schneider, Klemens Paul Kaiser, Petra Davidova, Thomas Kohnen, Tyll Jandewerth   +4 more
wiley   +1 more source

Applications of Scheimpflug Imaging in Glaucoma Management: Current and Potential Applications

Journal of Ophthalmology, 2016
Scheimpflug photography is the basis for a variety of imaging devices that are highly versatile. The applications of Scheimpflug imaging are wide in scope, spanning from evaluation of corneal ectasia to quantifying density in nuclear sclerotic cataracts.
Alexander T. Nguyen, Tiffany Liu, Ji Liu
doaj   +1 more source

Universal Opacity Standard for Scheimpflug Photography

Ophthalmic Research, 2000
<i>Purpose:</i> To develop a universal standard for comparison of the results from different studies using Scheimpflug photography. <i>Material and Method:</i> A suspension including polystyrene spheres was selected as the universal standard.
W, Qian, P, Söderberg, E, Chen, B, Philipson   +3 more
openaire   +2 more sources

Influence of Pachymetry and Intraocular Pressure on Dynamic Corneal Response Parameters in Healthy Patients [PDF]

, 2016
To evaluate the influence of pachymetry, age, and intraocular pressure in normal patients and to provide normative values for all dynamic corneal response parameters (DCRs) provided by dynamic Scheimpflug ...
Ahmed Elsheikh, Ali, Ambrósio, Ambrósio, Andreassen, Bak-Nielsen, Bao, Bernardo T. Lopes, Carvalho, Claudio Azzolini, Coste, Cynthia J. Roberts, Davey, David Sung Yong Kang, Daxecker, Dupps, Dupps, Elsheikh, Elsheikh, Elsheikh, Elsheikh, Elsheikh, Elsheikh, Emanuela Morenghi, Fern, Frings, Frings, Hallahan, Hassan, Huseynova, Joda, Kling, Knox Cartwright, Lee, Liu, Luce, Manny, Mikielewicz, Nomura, Paolo Vinciguerra, Pedersen, Pinero, Regensburg, Renato Ambrósio, Riccardo Vinciguerra, Roberts, Roberts, Roberts, Rochtchina, Salvetat, Shen, Shen, Tian, Tian, Tian, Wilson, Wong, Ye   +57 more
core   +1 more source

Corneal transplantation: Restoring sight to the blind

Acta Ophthalmologica, EarlyView.
Abstract Corneal blindness is one of the leading causes of vision loss worldwide. Transplantation of the cornea can restore vision and make blind patients see again. Corneal transplant surgery has undergone major evolution in recent decades with the advent of minimally invasive lamellar surgical approaches such as DMEK and DALK.
Claus Cursiefen
wiley   +1 more source