Search results for "Head position"
showing 4 items of 4 documents
Effect of head position on refraction in aphakic and phakic silicone-filled eyes.
1997
BACKGROUND The refraction of the eye is altered significantly after the instillation of silicone oil into the vitreous cavity because of the silicone oil's high refractive index. The degree of the refractive change shows diurnal variation and depends on the patient's head position. PATIENTS AND METHODS To analyze the degree and time course of refractive changes with respect to head position, the authors performed objective refraction in five aphakic and five phakic silicone oil-instilled eyes with attached maculae using an automatic hand-held refractometer. In each patient, 25 measurements were taken at short intervals using a hand-held autorefractometer with the patient in different positi…
Spatules de Thierry ou forceps : comparaison des morbidités materno-fœtales
2016
Resume Objectif Comparer la morbidite materno-fœtale immediate lors d’une l’extraction par forceps ou par spatules de Thierry. Methodes Etude retrospective, descriptive, monocentrique de 2006 a 2012. Les extractions etaient realisees par spatules ou forceps pour defaut de progression du mobile fœtale, sur singleton, en presentation cephalique, a terme, sans anomalies du rythme cardiaque fœtal et sans pathologie gravidique associee. Resultats Notre serie comprenait 65 extractions par spatules contre 77 par forceps. Nos populations etaient comparables. Au niveau maternel, on retrouvait davantage de perinees intacts (5,19 % versus 15,38 %, p = 0,04), autant de dechirures vaginales et moins de …
The foot posture index in men practicing three sports different in their biomechanical gestures.
2014
BackgroundThe technical gestures characteristic of certain sports may lead to one type of foot being more prevalent than the others. The Foot Posture Index (FPI) has been used as a diagnostic tool for support postures in various sports, but the differences in these postures between sports of distinct gestures in their actions are far from completely understood.MethodsThe overall FPI, obtained as the sum of the scores of its six individual criteria, was determined in 90 male athletes (30 runners, 30 basketball players, and 30 handball players) in static bipedal stance and relaxed position. Analysis of variance was used to find significant differences among the three sports in the total FPI a…
An overview of head tracking integral imaging three-dimensional display using smart pseudoscopic-to-orthoscopic conversion
2017
We overview a previously reported head tracking integral imaging three-dimensional (3D) display to extend viewing angle accommodated to a viewer's position without the crosstalk phenomenon. A head detection system is applied to obtain the head position and rotation of a viewer, and a new set of elemental images is then computed using the smart pseudoscopic-to-orthoscopic conversion (SPOC) method for head tracking 3D display. Experimental results validate the proposed method for high quality 3D display with large viewing angle.