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https://www.readbyqxmd.com/read/29777869/subconjunctival-dendrimer-drug-therapy-for-the-treatment-of-dry-eye-in-rabbits-with-induced-autoimmune-dacryoadenitis
#1
Hui Lin, Ying Liu, Siva P Kambhampati, Chih-Chien Hsu, Rangaramanujam M Kannan, Samuel C Yiu
PURPOSE: To investigate the efficacy of a single subconjunctival injection of dendrimer-dexamethasone to treat dry eye in a rabbit model of induced autoimmune dacryoadenitis (AID). METHOD: Dendrimer biodistribution after subconjuntival injection in AID animals was evaluated using Cy5-labelled dendrimer (D-Cy5) and confocal microscopy. Diseased animals were treated with free dexamethasone (Free-Dex), dendrimer-dexamethasone (D-Dex), or saline via a single subconjunctival injection...
May 16, 2018: Ocular Surface
https://www.readbyqxmd.com/read/29776031/regularized-lattice-boltzmann-model-for-immiscible-two-phase-flows-with-power-law-rheology
#2
Yan Ba, Ningning Wang, Haihu Liu, Qiang Li, Guoqiang He
In this work, a regularized lattice Boltzmann color-gradient model is developed for the simulation of immiscible two-phase flows with power-law rheology. This model is as simple as the Bhatnagar-Gross-Krook (BGK) color-gradient model except that an additional regularization step is introduced prior to the collision step. In the regularization step, the pseudo-inverse method is adopted as an alternative solution for the nonequilibrium part of the total distribution function, and it can be easily extended to other discrete velocity models no matter whether a forcing term is considered or not...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29759251/using-of-aerodynamic-droplet-breakup-for-mass-spectrometric-analysis
#3
Viktor V Pervukhin, Dmitriy G Sheven
The method of ionization by aerodynamic droplet breakup is considered for applications in mass spectrometric analysis. It is assumed that Aerodynamic Breakup Droplet Ionization (ABDI) occurs in a tube linking the region of atmospheric pressure to the area of weak vacuum. The possibility of ionization of solutions of organic compounds and organometallic complexes is shown. As test compounds were chosen: heroin (as an example of organic compounds) and organometallic complexes of ruthenium and copper, dissolved in water or acetonitrile...
August 1, 2018: Talanta
https://www.readbyqxmd.com/read/29758689/dynamics-of-deformation-and-pinch-off-of-a-migrating-compound-droplet-in-a-tube
#4
Manash Pratim Borthakur, Gautam Biswas, Dipankar Bandyopadhyay
A computational fluid dynamic investigation has been carried out to study the dynamics of a moving compound droplet inside a tube. The motions associated with such a droplet is uncovered by solving the axisymmetric Navier-Stokes equations in which the spatiotemporal evolution of a pair of twin-deformable interfaces has been tracked employing the volume-of-fluid approach. The deformations at the interfaces and their subsequent dynamics are found to be stimulated by the subtle interplay between the capillary and viscous forces...
April 2018: Physical Review. E
https://www.readbyqxmd.com/read/29758672/generation-of-intermittent-gravitocapillary-waves-via-parametric-forcing
#5
Gustavo Castillo, Claudio Falcón
We report on the generation of an intermittent wave field driven by a horizontally moving wave maker interacting with Faraday waves. The spectrum of the local gravitocapillary surface wave fluctuations displays a power law in frequency for a wide range of forcing parameters. We compute the probability density function of the local surface height increments, which show that they change strongly across time scales. The structure functions of these increments are shown to display power laws as a function of the time lag, with exponents that are nonlinear functions of the order of the structure function...
April 2018: Physical Review. E
https://www.readbyqxmd.com/read/29758624/one-dimensional-reduction-of-viscous-jets-ii-applications
#6
Cyril Pitrou
In a companion paper [Phys. Rev. E 97, 043115 (2018)10.1103/PhysRevE.97.043115], a formalism allowing to describe viscous fibers as one-dimensional objects was developed. We apply it to the special case of a viscous fluid torus. This allows to highlight the differences with the basic viscous string model and with its viscous rod model extension. In particular, an elliptic deformation of the torus section appears because of surface tension effects, and this cannot be described by viscous string nor viscous rod models...
April 2018: Physical Review. E
https://www.readbyqxmd.com/read/29757849/ocular-surface-findings-in-patients-with-lichen-planopilaris
#7
Mehdi Gheisari, Sahar Dadkhahfar, Kaveh Fadakar, Reza Mahmoud Robati, Hamideh Moravvej, Mohammad Soleimani, Reza Mirshahi
PURPOSE: Lichen planopilaris (LPP) is a chronic lymphocytic- mediated disorder that selectively involves hair follicles, leading to cicatricial alopecia. The eyelash follicle and meibomian gland (MG) might also be involved in the disease process leading to ocular surface problems. METHODS: In this Cross-sectional case -control study, twenty-three patients with histologically confirmed LPP and 23 healthy controls were recruited in this controlled study. To quantify the signs and symptoms of LPP, we used the Lichen Planopilaris Activity Index...
May 10, 2018: Cornea
https://www.readbyqxmd.com/read/29714263/light-sheet-fluorescence-microscopic-imaging-for-the-primary-breakup-of-diesel-and-gasoline-sprays-with-real-world-fuels
#8
Alexander Durst, Michael Wensing, Edouard Berrocal
This paper describes the adaptation of the laser-induced fluorescence measurement technique for the investigation of the primary breakup of modern diesel and gasoline direct injection sprays. To investigate the primary breakup, a microscopic technique is required, and with the help of special tracer dyes, a high fluorescence signal can be achieved in the visible range of the electromagnetic spectrum, resulting in good image quality with a nonintensified camera. Besides the optimization of the optical setup for the microscopic field of view, different tracer dyes are compared, and their solubility and fluorescence are tested in the desired surrogate and real-world fuels...
April 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29700925/effect-of-a-punctal-plug-on-ocular-surface-disease-in-patients-using-topical-prostaglandin-analogues-a-randomised-controlled-trial
#9
Justin C Sherwin, Gokulan Ratnarajan, Babar Elahi, Anna Bilkiewicz-Pawelec, John F Salmon
IMPORTANCE: Ocular surface disease (OSD) is common and can reduce treatment compliance and quality of life. BACKGROUND: To determine whether a punctal plug improves OSD and reduces IOP in patients using prostaglandin-analogue monotherapy. DESIGN: Randomised-controlled trial PARTICIPANTS: Sixty eligible subjects aged >18 years with symptomatic OSD from glaucoma clinics were invited to participate. Lacrimal or glaucoma surgery, lid malposition and contact lens wear were exclusion criteria...
April 26, 2018: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/29692600/a-novel-system-tearcare-%C3%A2-for-the-treatment-of-the-signs-and-symptoms-of-dry-eye-disease
#10
David Badawi
Purpose: The objective of this study was to evaluate the safety and effectiveness of the TearCare® System in adult patients with clinically significant dry eye disease (DED). Patients and methods: This was a prospective, single-center, randomized, parallel-group, clinical trial. Subjects with DED were randomized to either a single TearCare treatment conducted at the clinic or 4 weeks of daily warm compress (WC) therapy. The TearCare procedure consisted of 12 minutes of thermal eyelid treatment immediately followed by manual expression of the meibomian glands...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29691696/influence-of-glaucoma-surgery-on-the-ocular-surface-using-oculus-keratograph
#11
Sue Zhong, Hezheng Zhou, Xiao Chen, Wenqiang Zhang, Liqun Yi
PURPOSE: To investigate the influence of trabeculectomy and phacotrabeculectomy on the ocular surface. DESIGN: Retrospective, case-control study. METHODS: Eighty-one samples without dry eyes were recruited and divided into three groups, including phacoemulsification group (N = 30) as control group, trabeculectomy group (N = 27) and phacotrabeculectomy group (N = 24) as study groups. Ocular surface parameters, including noninvasive keratograph first (NifBUT) and average (NiaBUT) tear film breakup time, tear meniscus height (TMH) and corneal fluorescein stain (CFS), were estimated preoperatively, at 3 days, 1 month and 3 months postoperatively using oculus keratograph...
April 24, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29687335/prospective-randomized-single-masked-parallel-study-exploring-the-effects-of-a-preservative-free-ophthalmic-solution-containing-hyaluronic-acid-0-4-and-taurine-0-5-on-the-ocular-surface-of-glaucoma-patients-under-multiple-long-term-topical-hypotensive-therapy
#12
Gloria Roberti, Luca Agnifili, Francesca Berardo, Ivano Riva, Michele Figus, Gianluca Manni, Luciano Quaranta, Francesco Oddone
INTRODUCTION: To compare the effects of a preservative-free (PF) ophthalmic solution containing hyaluronic acid (HA) 0.4% and taurine (TAU) 0.5% with those of a PF ophthalmic solution containing HA 0.2% on ocular surface signs, symptoms, and morphological parameters in glaucoma patients under multiple long-term topical hypotensive therapy. METHODS: Eligible patients underwent evaluation of ocular surface parameters by ocular surface disease index (OSDI) and glaucoma symptom scale (GSS) questionnaires, breakup time test (BUT), Schirmer I test, corneal and conjunctival staining (Oxford scale), and conjunctival in vivo confocal microscopy (Heidelberg Retina Tomograph 3, Heidelberg Engineering GmbH, Heidelberg, Germany)...
April 23, 2018: Advances in Therapy
https://www.readbyqxmd.com/read/29687109/negative-normal-stress-differences-n-1-n-2-in-a-low-concentration-capillary-suspension
#13
Irene Natalia, Nicole Zeiler, Moritz Weiß, Erin Koos
Here, negative normal stress differences are reported in capillary suspensions, i.e. particle suspensions in a two-fluid system that creates strong capillary attractions, at a solid concentration of 25%, and a volume fraction that has heretofore been considered too low to show such normal stress differences. Such capillary suspensions have strong particle networks and are shear thinning for the entire range of shear rates studied. Capillary suspensions exist in two states: a pendular state when the secondary fluid preferentially wets the particles, and a capillary state when the bulk fluid is preferentially wetting...
April 24, 2018: Soft Matter
https://www.readbyqxmd.com/read/29677348/the-relationship-of-lid-wiper-epitheliopathy-to-ocular-surface-signs-and-symptoms
#14
Wing Li, Thao N Yeh, Tiana Leung, Tiffany Yuen, Mariel Lerma, Meng C Lin
Purpose: There has been interest in determining whether lid wiper epitheliopathy (LWE) plays a key role in causing ocular discomfort. Conflicting reports have made it difficult to discern whether LWE is more prevalent in certain populations, what characteristics are associated with its severity, and what its role is in symptomology. This cross-sectional study on a large and diverse population attempts to answer these questions. Methods: Subjects were asked to complete questionnaires related to dry eye and to ocular discomfort...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29676308/correlation-between-dry-eye-and-refractive-error-in-saudi-young-adults-using-noninvasive-keratograph-4
#15
Rania M Fahmy, Amal Aldarwesh
Purpose: The purpose is to study the correlation between dry eye and refractive errors in young adults using noninvasive Keratograph. Methods: In this cross sectional study, a total of 126 participants in the age range of 19-25 years and who were free of ocular surface disease, were recruited from King Saud University Campus. Refraction was defined by the spherical equivalent (SE) as the following: 49 emmetropic eyes (±0.50 SE), 48 myopic eyes (≤-0.75 SE and above), and 31 hyperopic eyes (>+0...
May 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675272/topical-osmoprotectant-for-the-management-of-postrefractive-surgery-induced-dry-eye-symptoms-a-randomised-controlled-double-blind-trial
#16
R M Hazarbassanov, N G T Queiroz-Hazarbassanov, J N Barros, J A P Gomes
Background: Dry eye disease (DED) is one of the most common complications following refractive surgery. Purpose: Evaluate the efficacy of an osmoprotective eye drop (Optive®) for the management of induced DED in refractive surgery patients. Design: Double-masked randomised controlled trial. Methods: Twenty-two refractive surgery patients oriented to apply FreshTears (FT; n = 13) or Optive (Op; n = 9), topically, QID, for 3 months...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29655348/mesoscopic-electrohydrodynamic-simulations-of-binary-colloidal-suspensions
#17
Nicolas Rivas, Stefan Frijters, Ignacio Pagonabarraga, Jens Harting
A model is presented for the solution of electrokinetic phenomena of colloidal suspensions in fluid mixtures. We solve the discrete Boltzmann equation with a Bhatnagar-Gross-Krook collision operator using the lattice Boltzmann method to simulate binary fluid flows. Solvent-solvent and solvent-solute interactions are implemented using a pseudopotential model. The Nernst-Planck equation, describing the kinetics of dissolved ion species, is solved using a finite difference discretization based on the link-flux method...
April 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29627838/assessment-of-corneal-changes-associated-with-topical-antiglaucoma-therapy-using-in-vivo-confocal-microscopy
#18
Elmira Baghdasaryan, Tudor C Tepelus, Laura A Vickers, Ping Huang, Vikas Chopra, SriniVas R Sadda, Olivia L Lee
PURPOSE: Ocular surface disease (OSD) is highly prevalent in eyes treated with chronic, topical antiglaucoma (A/G) therapy. The purpose of this study was to utilize in vivo confocal microscopy (IVCM) to evaluate the corneal morphology, including characteristics of corneal epithelial cells, presence of epithelial dendritic cells (DCs), and characteristics of subbasal nerve plexus, of eyes under topical A/G therapy versus normal eyes. METHODS: Central corneal images were prospectively captured from 30 eyes of 16 patients under topical A/G therapy (>6 months) and 20 normal control eyes, using IVCM (HRT 3 RCM, Heidelberg, Germany)...
April 7, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29625494/the-role-of-2-rebamipide-eye-drops-related-to-conjunctival-differentiation-in-superoxide-dismutase-1-sod1-knockout-mice
#19
Takashi Kojima, Cem Simsek, Ayako Igarashi, Kazue Aoki, Kazunari Higa, Takahiko Shimizu, Murat Dogru, Kazuo Tsubota, Jun Shimazaki
Purpose: The superoxide dismutase-1 knockout (Sod1-/-) mouse is an age-related dry eye mouse model. We evaluated the role of 2% rebamipide ophthalmic solution on the conjunctiva and ocular surface alterations in Sod1-/- mice. Methods: Rebamipide eye drops (2%) were instilled in six 50-week-old male Sod1-/- mice and six C57BL/6 strain wild-type (WT) male mice four times a day for 2 weeks. Aqueous tear secretion quantity and tear film breakup time measurements as well as vital stainings were performed...
March 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29596033/high-prevalence-of-ocular-surface-disease-among-glaucoma-patients-in-thailand
#20
Ngamkae Ruangvaravate, Pinnita Prabhasawat, Virunya Vachirasakchai, Ratchadaporn Tantimala
PURPOSE: To determine the prevalence of symptoms and signs of ocular surface disease (OSD) among Thai patients with glaucoma receiving topical intraocular pressure (IOP)-lowering therapy. METHODS: Consecutive patients with glaucoma were recruited prospectively for this cross-sectional study from Siriraj Hospital. Subjective symptoms were evaluated using the Ocular Surface Disease Index (OSDI), and objective clinical signs were evaluated using the tear breakup time (TBUT), corneal fluorescein, rose bengal staining, and the Schirmer test...
March 29, 2018: Journal of Ocular Pharmacology and Therapeutics
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