Aims. To describe and explore the distribution of ocular biometric parameters of adult cataract patients in rural China. Methods. Three Lifeline Express Hospital Eye-Train missions of Peking University People's Hospital in China were chosen. 3828 adult cataract patients aged 29 to 88 years with axial length (AL) less than 27.0 mm were enrolled. The ocular biometry including visual acuity (VA), ...

The va por press ure of tungs te n was measured by the Langmuir method in the te mpe rature range 2600 to 3100 K using a vac uum microbala nce. Four se ries of data gave concorda nt result s and three of the fo ur seri es gave second and third law heats of s ublimation in exce llent agreeme nt. A va por pressure equ ation representing the data is log P(atm )=45385/T + 7.87 1, based on our mean ...

1Department of Mathematics and Computer Science, Virginia State University, P.O. Box 9068, Petersburg, VA 23806, USA 2Center for the Study of International Medical Policies and Practices, School of Public Policy, George Mason University, Fairfax, VA 22030, USA 3AAL International Association, Bischoffsheimlaan 25, 1000 Brussels, Belgium 4Center for Human Simulation and Patient Safety, School of ...

Pager et al. should be commended for attempting the challenging global cataract surgery outcome study reported in the August issue of Clinical and Experimental Ophthalmology . 1 The inclusion of visual disability, quality of life and satisfaction measures is an important approach that, as the authors state, has rarely been made. Patientcentred measures are needed where impairment is not fully c...

Patients receiving circulatory support with peripheral veno-arterial extracorporeal membrane oxygenation (VA-ECMO) are at risk of developing differential hypoxia. This phenomenon occurs in patients with concomitant respiratory failure. Poorly oxygenated blood, ejected into the ascending aorta from the left ventricle, competes with retrograde flow from the ECMO circuit, potentially causing myoca...

Phenotypic changes in exploited fish stocks have been reported worldwide (1), but it remains an open question how much is attributable to phenotypic plasticity (likely reversible) versus genetic change (likely slow to reverse), and whether the driver is fishing (manageable) or environmental (mostly difficult to control). Recently, Eikeset et al. (2) attempted to disentangle density dependence f...

[1]. Departamento de Patologia e Medicina Legal, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE. [2]. Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Odontologia e Enfermagem, Universidade Federal do Ceará, Fortaleza, CE. [3]. Departamento de Farmácia, Faculdade de Farmácia, Odontologia e Enfermagem, Universidade Federal do Ceará, Fortaleza, CE. [4...

A number of chemicals including antioxidants, vitamins and hormones are widely advertised as anti-aging drugs (geroprotectors). It is usually believed that life-extending capacity of geroprotectors may be attributed to their specific anti-aging mechanisms, even without solid scientific evidence. The analysis of the survival data gathered by both anti-aging and hormetic interventions demonstrate...

What do we want to learn from a translation competition and how do we learn it with confidence? We argue that a disproportionate focus on ranking competition participants has led to lots of different rankings, but little insight about which rankings we should trust. In response, we provide the first framework that allows an empirical comparison of different analyses of competition results. We t...