Purpose: To evaluate correlations between preoperative sizing of Implantable Collamer Lens (ICL) by white-towhite and sulcus-to-sulcus techniques, and postoperative vault size measured by Sheimpflug imaging. Setting: Persian Eye Clinic, a private eye clinic located in Isfahan city, Iran Design: Prospective, nonrandomized clinical trial Methods: This prospective clinical trial included 63 eyes o...

A Welfare-to-Work (WTW) program is a scheme of government expenditures on “passive” (unemployment compensation, social assistance) and “active” (job search monitoring, training, wage subsidies) labor market policies targeted to the unemployed. This paper studies the optimal WTW program as a recursive contract between a cost-minimizing government and a worker whose human capital depreciates duri...

The advanced monitoring of water quality and performing a real time hazard analysis prior to entering Water Treatment Works (WTW) is very much a necessity nowadays in order to give warning of any contamination and avoid downtime of the WTW. Ultrasonic flow sensors are considered to be the most stable and reliable sensors to be used within the water and wastewater industry, as they are not easil...

This paper studies the topological properties of the World Trade Web (WTW) and its evolution over time by employing a weighted network analysis. We show that the WTW, viewed as a weighted network, displays statistical features that are very different from those obtained by using a traditional binary-network approach. In particular, we find that: (i) the majority of existing links are associated...

Advanced monitoring of water quality in order to perform a real-time hazard analysis prior to Water Treatment Works (WTW) is more important nowadays, both to give warning of contamination and also to avoid downtime of the WTW. Downtimes could be a major contributor to risk. Any serious accident will cause a significant loss in customer and investor confidence. In this paper, two treatment plant...

PURPOSE To determine the normal distribution of corneal diameter in a 40- to 64-year-old population and its association with other biometric components. METHODS In a cross-sectional population-based study, subjects were selected through multistage cluster sampling from the 40- to 64-year-old citizens of Shahroud in northern Iran. After obtaining informed consents, optometry tests including re...

PURPOSE To evaluate the relationship between the horizontal ciliary sulcus diameter and anterior chamber diameter measured by 35 MHz ultrasound biomicroscopy (UBM) and the horizontal corneal diameter (white to white [WTW]) measured by scanning-slit topography and to assess the repeatability (intraexaminer difference) of the 2 methods. SETTING Department of Orthoptics and Visual Science, Kitas...

PURPOSE To compare the central postoperative vault of a phakic intraocular lens (pIOL) to correct myopia, myopic astigmatism, and hyperopia and identify ocular and lens parameters that might predict the vault amount. SETTING Fernández-Vega Ophthalmological Institute, Oviedo, Spain. DESIGN Cohort study. METHODS Three months after implantation of Implantable Collamer Lens pIOLs to correct m...

T he current state of outpatient healthcare delivery is characterized by capacity shortages and long waits for appointments, yet a substantial fraction of valuable doctors’ capacity is wasted due to no-shows. In this study, we examine the effect of wait to appointment on patient flow, specifically on a patient’s decision to schedule an appointment and to subsequently arrive to it. These two dec...

Purpose. To assess the consistency of anterior segment measurements obtained using a Sirius Scheimpflug/Placido photography-based topography system (CSO, Italy) and IOLMaster partial coherence interferometry (Carl Zeiss Meditec, Germany) in eyes with cataracts. Methods. A total of 90 eyes of 90 patients were included in this prospective study. The anterior chamber depth (ACD), keratometry (K), ...