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Mostrando ítems 571-580 de 633
Artículo
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Intraocular lens power calculation formula accuracy: Comparison of 12 formulas for a trifocal hydrophilic intraocular lens
(Wichtig Publishing; SAGE PUBLICATIONS LTD, 2021)
Purpose: To evaluate the accuracy of 12 intraocular lens (IOL) power formulas; Barrett Universal II, Emmetropia Verifying Optical (EVO), Haigis, Hill-Radial Basis Function (RBF), Hoffer Q, Holladay I, Kane, Ladas Super ...
Artículo
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Influence of sodium hyaluronate concentration in tear meniscus height: 10 minutes dynamic profile after single instillation
(LIPPINCOTT WILLIAMS & WILKINS, 2021)
Purpose: To assess the height, area, and density of tear meniscus throughout 10 min after instillation of sodium hyaluronate (SH) of equal molecular weight at two different concentrations. Methods: Thirty-four eyes from ...
Artículo
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Glasses-Assisted 3D Display System–Guided Descemet Membrane Endothelial Keratoplasty Tissue Preparation
(LIPPINCOTT WILLIAMS & WILKINS, 2022)
Purpose: The aim of this study was to evaluate the feasibility of Descemet membrane endothelial keratoplasty (DMEK) tissue prep- aration using a glasses-assisted 3-dimensional (3D) display system and to compare it with a ...
Artículo
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Small-Aperture Intracorneal Inlay Implantation in Emmetropic Presbyopic Patients: A Systematic Review
(NATURE PUBLISHING GROUP; SPRINGERNATURE, 2022)
Small-aperture corneal inlays, commonly known as KAMRA, are tiny optical devices inserted in the corneal stroma aiming to gain near vision in patients with presbyopia. The purpose of this study was to systematically review ...
Artículo
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Study of Electrical and Dielectric Behaviors of Copper-Doped Zinc Oxide Ceramic Prepared by Spark Plasma Sintering for Electronic Device Applications
(MDPI, 2024)
In this study, Cu-doped ZnO aerogel nanoparticles with a 4% copper concentration (Cu4ZO) were synthesized using a sol–gel method, followed by supercritical drying and heat treatment. The subsequent fabrication of Cu4ZO ...
Artículo
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Phase transitions in lawsonite: a calorimetric study
(E. Schweizerbart’sche Verlagsbuchhandlung, 2001)
The specific heat of lawsonite, \ce{CaAl2Si2O7(OH)2.H2O}, has been measured in the temperature range $[\SI{125}{\kelvin},\SI{325}{\kelvin}]$. An anomaly is seen at \SI{273}{\kelvin}, which is related to the $\mathrm{Cmcm} ...
Artículo
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Square modulated differential thermal analysis
(Elsevier, 2002-12-27)
KMnF3 and DKDP crystals have been studied around their phase transitions using a conduction calorimetry technique where a long periodical square thermal pulse (0.05 K in amplitude) is superposed to a heating or cooling ...
Artículo
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Comparison Between the Wavefront-Optimized and Custom-Q Aspheric Ablation Profiles in Myopic Eyes With Two Different Q-targets: A Contralateral Eye Study
(SLACK INC, 2022)
PURPOSE: To compare two aspheric ablation profiles in myo- pic refractive surgery using different asphericity targets. METHODS: Patients underwent laser in situ keratomileu- sis (LASIK) with the WaveLight EX500 laser ...
Artículo
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Efficacy of 0.1% crosslinked hyaluronic acid, coenzyme Q10 and vitamin E in the management of dry eye disease in menopause patients receiving antidepressants
(Wichtig Publishing; SAGE PUBLICATIONS LTD, 2022)
Purpose. The purpose of this study is to test non-inferiority of a lower dose of crosslinked hyaluronic acid (CLHA) to a higher dose of carmellose eye drop in menopause patients receiving antidepressant treatments. Methods. ...
Artículo
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Permavision intracorneal inlay after sixteen years. Regression of initial refractive hyperopia
(ELSEVIER SCIENCE BV; ELSEVIER, 2020)
According to the available scientific literature, 77 patients underwent Permavision inlay worldwide, between 2004 and 2007. This study reported about the use of Permavision intracorneal inlay to increase the central corneal ...