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Results 201 - 250 of 1924
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Mead Chris - - 2013
The recent widespread adoption of compact fluorescent lamps (CFL) has increased their importance as a source of environmental Hg. Stable isotope analysis can identify the sources of environmental Hg, but the isotopic composition of Hg from CFL is not yet known. Results from analyses of CFL with a range of ...
Fischer Kristin M - - 2013
Objective-To determine the effects of topically applied 2% delta-9-tetrahydrocannabinol (THC) ophthalmic solution on aqueous humor flow rate (AHFR) and intraocular pressure (IOP) in clinically normal dogs. Animals-21 clinically normal dogs. Procedures-A randomized longitudinal crossover design was used. Following acquisition of baseline IOP (morning and evening) and AHFR (afternoon only) data, ...
Quagliato Lucas Barasnevicius - - 2013
This paper describes a topiramate induced acute bilateral angle-closure glaucoma. This rare adverse effect is an idiosyncratic reaction characterized by uveal effusion and lens forward displacement, leading to increased intraocular pressure and vision loss. We describe a 55 year-old white woman with migraine, spasmodic torticollis and essential tremor, who developed ...
Huang Jie - - 2013
Quantifying the contribution of mercury (Hg) in wet deposition is important for understanding Hg biogeochemical cycling and anthropogenic sources, and verifying atmospheric models. Mercury in wet deposition was measured over the year 2010, in Lhasa the capital and largest city in Tibet. Precipitation samples were analyzed for total Hg (Hg(T)), ...
Ayitou Anoklase J-L - - 2013
Enantiospecific axial-to-point chiral transfer in light-induced transformations was efficient under elevated pressure at high temperatures. Model photoreactions with atropisomeric compounds showed higher enantioselectivity in the photoproducts under elevated pressure. The ee values in the photoproducts were rationalized based on the increased stability of optically pure atropisomeric compounds at elevated pressure, ...
Chen Dongliang - - 2013
In combination with a single-crystal diamond anvil cell (DAC), a polycapillary half-lens (PHL) re-focusing optics has been used to perform high-pressure extended X-ray absorption fine-structure measurements. It is found that a large divergent X-ray beam induced by the PHL leads the Bragg glitches from single-crystal diamond to be broadened significantly ...
Gardiner Stuart K SK Discoveries in Sight Laboratories, Devers Eye Institute, Legacy Research Institute, Legacy Health, Portland, Oregon 97232, USA. - - 2013
Longitudinal testing plays a key role in glaucoma management. Variability between visits hampers the ability to monitor progression. It has previously been shown that average intraocular pressure (IOP) exhibits seasonal fluctuations. This study examines whether visual field sensitivity also exhibits seasonal fluctuations and seeks to determine whether such fluctuations are ...
Farrell S M J - - 2013
Applanation tonometry is widely performed as the most accurate method of measuring intraocular pressure in the clinical setting. Disposable tonometer heads reduce the risk of transmitting infection during applanation and eliminate tonometer head cleaning, which is time-consuming. We performed a study to investigate whether the Tonojet disposable tonometer (Luneau, France) ...
Dams Iwona - - 2013
The pharmacological management of glaucoma and ocular hypertension has significantly changed over the last 18 years with the introduction of PGF(2α) analogues, more specifically latanoprost (6), travoprost (8), bimatoprost (10) and tafluprost (12). Prostanoids are currently the first-line medicines among ocular antihypertensive drugs in terms of efficacy, safety, patient compliance ...
Ramli N - - 2013
OBJECTIVES: In the absence of raised intraocular pressure (IOP), haemodynamic parameters have been implicated in the development of normal tension glaucoma (NTG). The purpose of this study is to compare 24-hour IOP and haemodynamic parameters in NTG patients and non-glaucoma patients. METHODS: This is a cross sectional study involving 72 ...
Sharma Reetika - - 2013
PURPOSE:: To compare Tono-Pen AVIA (TPA) intraocular pressure (IOP) measurements performed at the limbus with central corneal Tono-Pen AVIA (TPA) intraocular pressure. METHODS:: Fifty-one patients attending our outpatient department with a best corrected visual acuity of ≥20/40, no corneal disease, and no astigmatism greater than 1.5 diopters underwent routine ophthalmological ...
Gogniat Fabrice - - 2013
PURPOSE: Dynamic contour tonometry (DCT) has been shown to measure the intraocular pressure (IOP) independently of corneal thickness. This study aimed to investigate if DCT remains accurate when the IOP measurement is taken over soft contact lenses (CLs) of different thicknesses and material characteristics. METHODS: This was a prospective clinical ...
Afshar Reza - - 2013
Introduction. End-stage renal disease and hemodialysis affect intraocular pressure (IOP). This study aimed to evaluate the effects of a one session of hemodialysis on IOP. Materials and Methods. In this study, the IOP of 130 eyes of 65 hemodialysis patients (38 men and 27 women) was measured before and every ...
Gangwani Rita A - - 2013
Purpose. To determine the presence and type of glaucoma in a cohort of adult Chinese subjects with systemic hypertension. Methods. This prospective cohort study included 200 hypertensive Chinese adults aged >40 years old who underwent screening via frequency doubling technology (FDT) perimetry and intraocular pressure (IOP) measurement by noncontact tonometry ...
Bui Bang V - - 2013
Intraocular pressure (IOP) elevation is a key risk factor for glaucoma. Our understanding of the effect that IOP elevation has on the eye has been greatly enhanced by the application of the electroretinogram (ERG). In this paper, we describe how the ERG in the rodent eye is affected by changes ...
Gaumé R M - - 2013
We describe the design and operation of a unique hydraulic press for the study of scintillator materials under isostatic pressure. This press, capable of developing a pressure of a gigapascal, consists of a large sample chamber pressurized by a two-stage hydraulic amplifier. The optical detection of the scintillation light emitted ...
Quaranta Luciano - - 2013
This review analyzes the currently available literature on circadian rhythms of intraocular pressure (IOP), blood pressure, and calculated ocular perfusion pressure (OPP) in patients with open-angle glaucoma. Although adequately powered, prospective trials are not available. The existing evidence suggests that high 24-hour IOP and OPP fluctuations can have detrimental effects ...
- - 2013
[This corrects the article on p. 1547 in vol. 6, PMID: 23055677.].
Mohamed Nabiel - - 2013
Several studies have confirmed the ability of cannabinoids to reduce intraocular pressure. Experimental data recently demonstrated unequivocally that the analgesic effect of paracetamol is due to its indirect action on cannabinoid receptors. The question then arises as to whether paracetamol can reduce intraocular pressure via its effect on intraocular cannabinoid ...
Golan Shani - - 2013
The aim of this study is to provide data on the controversial issue of whether handheld measurements of intraocular pressure (IOP) are capable of accurately predicting elevated intracranial pressure (ICP) in patients undergoing lumbar puncture (LP). All patients over the age of 18 years who underwent an LP in the ...
Moisseiev Elad - - 2013
The purpose of this study was to evaluate the safety and efficacy of a fixed combination of timolol maleate 0.5% + brimonidine tartrate 0.2% (Combigan®) for reduction for intraocular pressure (IOP) in patients with glaucoma when the dose frequency is increased from twice to three times daily. The patients included ...
Gao Junyuan - - 2013
Previous experiments showed that mouse lenses have an intracellular hydrostatic pressure that varied from 335 mm Hg in central fibers to 0 mm Hg in surface cells. Model calculations predicted that in larger lenses, all else equal, pressure should increase as the lens radius squared. To test this prediction, lenses ...
Figueiredo Bruno P - - 2013
The purpose of this study was to investigate the correlation between ocular perfusion pressure and ocular pulse amplitude in glaucoma, ocular hypertension, and normal eyes. Ninety eyes from 90 patients were included. Thirty patients had been recently diagnosed with glaucoma and had no previous history of treatment for ocular hypotension, ...
Pekel Gökhan - - 2013
Purpose. This study examines the effects of fundus fluorescein angiography (FFA) procedure on ocular pulse amplitude (OPA) and intraocular pressure (IOP). Materials and Methods. Sixty eyes of 30 nonproliferative diabetic retinopathy patients (15 males, 15 females) were included in this cross-sectional case series. IOP and OPA were measured with the ...
Karaśkiewicz Joanna - - 2013
On the basis of the literature data to assess the efficacy of the electrophysiological tests (pattern electroretinogram, multifocal electroretinogram and multifocal visual evoked potentials) in evaluation of retinal ganglion cells function in glaucomatous and ocular hypertension eyes, after intraocular pressure reduction. Data published in the literature available at the Pub ...
Wang Ya Xing - - 2013
To examine a potential association between longitudinal changes in intraocular pressure (IOP), arterial blood pressure and body mass index (BMI) in a population-based setting. The longitudinal population-based Beijing Eye Study included 2355 subjects with an age of 45+ years who were examined in 2006 and in 2011. The participants underwent ...
Jonas Jost B - - 2013
To assess associations of the trans-lamina cribrosa pressure difference (TLCPD) with glaucomatous optic neuropathy. The population-based Central India Eye and Medical Study included 4711 subjects. Based on a previous study with lumbar cerebrospinal fluid pressure (CSFP) measurements, CSFP was calculated as CSFP[mmHg] = 0.44 Body Mass Index[kg/m2]+0.16 Diastolic Blood Pressure[mmHg]-0.18×Age[Years] -1.91. TLCPD ...
Keller Kate E KE Casey Eye Institute, Oregon Health & Science University, Portland, Oregon 97239, USA. - - 2013
Tenascin C (TNC) is a matricellular glycoprotein whose expression in adult tissue is indicative of tissue remodeling. The purpose of the current study was to determine the localization of TNC in trabecular meshwork (TM) tissue and to analyze the effects of TNC on intraocular pressure (IOP). Human TM frontal sections ...
L Shahsuvaryan Marianne M Yerevan State Medical University, Yerevan, - - 2013
Glaucoma is a major cause of worldwide irreversible blindness. The central role of raised intraocular pressure (IOP) is being questioned as many patients continue to demonstrate a clinically downhill course despite initial control of IOP. The latest concept of recognizing glaucoma as a multifactorial, progressive, neurodegenerative disease of retinal ganglion ...
Rocha-Sousa A A Department of Sense Organs, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal ; Department of Ophthalmology, São João Hospital, 4200-319 Porto, - - 2013
Primary open-angle glaucoma (POAG) is a leading cause of irreversible and preventable blindness and ocular hypertension is the strongest known risk factor. With current classes of drugs, management of the disease focuses on lowering intraocular pressure (IOP). Despite of their use to modify the course of the disease, none of ...
Song Julia J Long Beach Memorial Medical Center, 2840 Long Beach Boulevard, #330, Long Beach, CA 90806, USA. - - 2013
Selective laser trabeculoplasty is a treatment option to lower intraocular pressure in patients with glaucoma. It has been proven to work in adults. We describe two pediatric patients with glaucoma who responded well to selective laser trabeculoplasty. Two patients with pediatric glaucoma underwent selective laser trabeculoplasty. Patient 1 was a ...
Yu Ji-guo JG School of Optometry and Opthalmology and Eye Hospital, Wenzhou Medical College, Zhejiang Province, - - 2013
To determine the biomechanical response of the rabbit cornea to inflation under posterior and anterior pressure. Twelve Japanese white rabbits were included in the study. A randomly selected eye from each animal was subjected to posterior pressure in an inflation test rig, and the other eye was subjected to anterior ...
Fellman Ronald L - - 2012
PURPOSE:: To report the observation of a perilimbal and/or episcleral vessel fluid wave seen during trabectome surgery, newly termed episcleral venous fluid wave. PATIENTS AND METHODS:: In 4 consecutive patients undergoing phaco-trabectome surgery, the authors observed the nasal perilimbal and episcleral collector vessels for an anticipated wave of fluid adjacent ...
Keymer Philip - - 2012
Anaerobic digestion of algal biomass will be an essential component of algal biofuel production systems, yet the methane yield from digestion of algae is typically much lower than the theoretical potential. In this work, high pressure thermal hydrolysis (HPTH) is shown to enhance methane yield during algae digestion. HPTH pre-treatment ...
Martínez-Águila Alejandro - - 2012
In the search for new compounds to reduce intraocular pressure (IOP), with fewer side effects, we have found that agomelatine, a melatonin analogue, can reduce IOP being, therefore, interesting for the treatment of ocular hypertension and glaucoma. In normotensive conditions, agomelatine (10μl 100μM) reduced IOP by 20.8±1.4% (n=18) with a ...
Liu Yang - - 2013
Glaucoma is a leading cause of visual loss worldwide. Current antiglaucoma therapy focuses on lowering intraocular pressure to a safe level. In recent years, prostaglandin analogs have become the first-line agents for treating open angle glaucoma. Tafluprost, which was first reported in 2003, is a novel prostaglandin analog, and has ...
Strohmaier Clemens - - 2012
PURPOSE: To compare four different femtosecond laser devices (IntraLase FS, Zeiss VisuMAX and Ziemer Femto LDV and a prototype Schwind SmartTech Nanolaser) in human donor eyes with regard to their effects on intraocular pressure during femtosecond laser flap cutting. In order to get cuts parallel to the corneal surface, the ...
Seibold Leonard K - - 2012
PURPOSE: To evaluate the effects of a novel ab interno trabeculectomy device on human trabecular meshwork (TM). DESIGN: Laboratory evaluation. METHODS: The TM from human cadaveric corneal rim tissue was incised using 3 instruments: (1) novel dual-blade device; (2) microvitreoretinal (MVR) blade; and (3) Trabectome. Tissue samples underwent histologic processing ...
Lee Wei-Jing - - 2012
Rhodiola rosea (Rhodiola) is grown at high altitudes and northern latitudes. It is mainly used clinically as an adaptogen, but antihypertensive effects have been reported for the extract. These have not been well investigated, so in the present study, we evaluated the effect of Rhodiola-water extract on blood pressure in ...
Jablonski Kerstin Stephanie - - 2012
AIM/BACKGROUND:: To compare intraocular pressure (IOP) measurements obtained by rebound tonometry (Icare PRO tonometer), applanation tonometry (Goldmann and Perkins tonometry), and dynamic contour tonometry in the upright and the supine positions, and to investigate the influence of axial length and central corneal thickness. METHODS:: Ninety-nine right eyes of 99 patients ...
Jimenez-Roman J - - 2012
To compare intraocular pressure (IOP) measurements obtained with Goldmann applanation (GAT) and dynamic contour tonometry (DCT) in a Mexican population. 40 glaucoma patients were included in this cross-sectional observational cohort study. IOP measurements were performed in the following order: DCT, ultrasonic pachymetry and GAT, with a 5-minute difference between each ...
El Chehab Hussam - - 2012
Purpose. The aim of this study was to evaluate pressure increases after intravitreal injections (IVI) and the interest in using prophylactic pressure-lowering medications. 
Methods. This was a prospective study of 250 anti-vascular endothelial growth factor IVI (ranibizumab) divided into 5 groups of 50 IVI (group 1: no intraocular pressure [IOP]-lowering ...
Tsoi Georgiy M - - 2012
High-pressure electrical resistance measurements have been performed on single crystal Ba(0.5)Sr(0.5)Fe(2)As(2) platelets to pressures of 16 GPa and temperatures down to 10 K using designer diamond anvils under quasi-hydrostatic conditions with an insulating steatite pressure medium. The resistance measurements show evidence of pressure-induced superconductivity with an onset transition temperature at ∼31 K and ...
Mottet Benjamin - - 2012
PURPOSE: TO EVALUATE THE SUPINE 24-H INTRAOCULAR PRESSURE (IOP) RHYTHM REPRODUCIBILITY OVER 6 WEEKS IN HEALTHY HUMANS. METHODS: Six healthy young male subjects underwent six 24-h sessions of IOP measurements over a 6-week period. Subjects were housed in a sleep laboratory in a constant controlled supine position and in a ...
Jürgens Clemens - - 2012
We evaluated the relation of systemic blood pressure with intraday variations in ocular perfusion pressure and intraocular pressure in patients with primary open-angle glaucoma in a telemedical home monitoring scenario. In the project Teletonometry Mecklenburg-Vorpommern (TTMV) patients were equipped with a home monitoring system for 24-hour self-measurements of intraocular pressure ...
Miglior Stefano - - 2012
Open-angle glaucoma is a multifactorial disease, and among the several risk factors, a high intraocular pressure represents the most consistent and the only one that can be modified in order to provide a significant impact over the course of the disease. High intraocular pressure is significantly associated to the onset ...
Cacciamani Andrea - - 2012
PURPOSE: To evaluate the immediate and short-term effects of intravitreal injection of 1.25 mg/0.05 ml of bevacizumab on intraocular pressure related to different ocular axial lengths. DESIGN: A prospective case series of consecutive patients referred to the Department of Ophthalmology, San Pietro-Fatebenefratelli Hospital, from September 2011 through January 2011. METHODS: Twenty-five patients ...
Bucolo Claudio - - 2012
Elevated eye pressure is the main risk factor for glaucoma, and intraocular pressure rises when the balance between aqueous humor formation and outflow resistance is compromised. In a normal eye there is a precise tune of aqueous outflow under the fine control of ciliary body and trabecular meshwork. Current pharmacological ...
Pescosolido N - - 2012
To evaluate the role of antioxidant drugs in the tonometric increase that follows the closed eyelid test (CET), a predicitive test for glaucoma, after administration of antioxidant substances was observed. 30 subjects of 54.57+/=5.62 years, 13 males and 17 females, were examined by measuring the ocular pressure after 1 hour ...
Ogbuehi Kelechi C - - 2012
PURPOSE: We sought to compare the intraocular pressure (IOP) measured by RKT-7700 and CT-80 noncontact tonometers (NCTs) with that measured by Goldmann applanation tonometry (GAT). We also examined the influence of central corneal thickness (CCT) on the agreement between both NCTs and GAT in a sub-population of healthy, young normals. ...
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