Results 51 to 60 of about 61,280 (177)
Studying the contribution of posterior corneal astigmatism to total corneal astigmatism
Journal of the Egyptian Ophthalmological Society, 2015 Settings The Faculty of Medicine, Alexandria University, Egypt. Purpose The aim of this work was to study the contribution of posterior corneal astigmatism to total corneal astigmatism.
Hany Ahmed Helaly
doaj +1 more source
, 2007 We present an experimental method for the in-situ observation of directional-solidification fronts in bulk samples of transparent eutectic alloys. The growth front is observed obliquely in dark field through the liquid and a glass wall of the container ...
Akamatsu +15 more
core +1 more source
Correlation Between Keratometric and Refractive Astigmatism in Pseudophakes
Clinical Ophthalmology, 2021 Shavini Athukorala,1 Neal Kansara,2 Erik Lehman,3 Seth M Pantanelli1 1Department of Ophthalmology, Penn State College of Medicine, Hershey, PA, USA; 2Department of Ophthalmology, Baylor College of Medicine, Houston, TX, USA; 3Department of Public Health ...
Athukorala S +3 more
doaj
An Infrared Camera for Leuschner Observatory and the Berkeley Undergraduate Astronomy Lab
, 2001 We describe the design, fabrication, and operation of an infrared camera which is in use at the 30-inch telescope of the Leuschner Observatory. The camera is based on a Rockwell PICNIC 256 x 256 pixel HgCdTe array, which is sensitive from 0.9-2.5 micron.
James R. Graham +3 more
core +1 more source
Effect of astigmatism and spherical equivalent correction on contrast sensitivity [PDF]
International Journal of OphthalmologyAIM: To investigate the effect of astigmatism and spherical equivalent (SE) correction on contrast sensitivity (CS). METHODS: In this cross-sectional study, 103 visually normal subjects aged 18 to 36y with bilateral regular astigmatism in range of 1.00 ...
Maryam Saffarizadeh +3 more
doaj +1 more source
Clinical Ophthalmology, 2017 Manoj Motwani Motwani LASIK Institute, San Diego, CA, USA Purpose: To show how an incorrect manifest astigmatism axis can cause an abnormal induced astigmatism on a new axis. Patients and methods: Four eyes of three patients were treated primarily with
Motwani M
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Astigmatism in candidates of Cataract surgery and its relationship with corneal optical power, axial length, sex and patient age [PDF]
Acta Medica Iranica, 2000 This study was conducted to define the prevalence and types of corneal astigmatism in relation with corneal optical power, axial length, sex and patient age. 641 cataract patients were included in a descriptive study.
Siatiri H
doaj
Delhi Journal of Ophthalmology, 2016 Aim: To evaluate the role of clear corneal incision combined with opposite clear corneal incision in controlling astigmatism in patients undergoing phacoemulsification surgery for cataract. Design: Prospective clinical study.
J. S. Bhalla +2 more
doaj +1 more source
CalFUSE v3: A Data-Reduction Pipeline for the Far Ultraviolet Spectroscopic Explorer
, 2007 Since its launch in 1999, the Far Ultraviolet Spectroscopic Explorer (FUSE) has made over 4600 observations of some 2500 individual targets. The data are reduced by the Principal Investigator team at the Johns Hopkins University and archived at the ...
A. W. Fullerton +16 more
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Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft, 2019 Astigmatism is the most frequent refractive error worldwide followed by hyperopia and myopia. Internal astigmatism has to be differentiated from external astigmatism. Furthermore, external astigmatism can be divided into "with the rule", "against the rule" and "oblique".
N, Woltsche +4 more
openaire +4 more sources