INTRODUCTION Many studies have been performed to evaluate the stress distribution around endodontic posts; those which compared posts composed of different materials are rare. The aim of this study was to compare stresses induced in dentin by three structurally different posts using photoelasticity method. MATERIALS AND METHODS Nine blocks of PSM-5 Photoelastic material with 45×45×10 mm dimen...

[1] Results of an experimental investigation of the turbulent boundary layer in airflow over evolving young wind-waves are presented. The experiments were conducted in a laboratory wind-wave flume consisting of a closed-loop wind tunnel capable of generating wind speed that may exceed 15 m/s, atop of a 5 m long wave tank. Simultaneous measurements of mean wind velocity and of instantaneous fluc...

The three-dimensional (3D) finite element model of human eye was established, and the intraocular pressure (IOP) loaded to simulate refractive surgery. biomechanical properties cornea after SMILE LASIK surgery were studied from stress, strain induced wavefront aberration. Our results showed that had less impact on biomechanics, having stress changes than LASIK. However, increased with increase ...

purpose : to evaluate the effect of induced esophoria and exophoria on distance stereoacuity at 6 meters methods : fifty subjects with distance corrected or uncorrected visual acuity of 6/6 and orthophoria without history of amblyopia, strabismus or any ocular pathology were recruited and distance stereoacuity was measured by howard-dolman test before and after introducing 2, 4, 6 and 8δ base i...

BACKGROUND Community level interventions to improve maternal and child health have been supported and well evaluated in resource poor settings, but less so in developed countries. PRISM--Program of Resources, Information and Support for Mothers--was a primary care and community-based cluster-randomised trial in sixteen municipalities in Victoria, Australia, which aimed to reduce depression in m...

BACKGROUND Skew deviation is typically caused by brainstem damage, and has not been identified with focal cerebellar lesions. This vertical strabismus has been attributed to asymmetric disruption of vestibuloocular reflex (VOR) projections from otolithic receptors of the utricle to ocular motoneurons, but asymmetry of the utriculo-ocular counter-roll reflex has not been detected. METHODS Lesi...

OBJECTIVE To test the quality of postural performance in quiet upright stance in healthy young adults with vertical heterophoria (VH) within the normal range and without VH (vertical orthophoria, VO). METHODS Twenty-six subjects took part in this study. The postural stability was measured with a force platform while the subjects fixated a target at eye level in a straight ahead position, plac...

Aim: To determine any differences in visual acuity (VA) and contrast sensitivity (CS) between 3M Fresnel prisms and Trusetal prisms foils. Methods: Sixteen participants (mean age 20 years) with normal VA and CS participated. The effect of 5D, 10D, 20D and 30D prism strengths on monocular VA and CS was assessed using a Bailey-Lovie logMAR chart and Pelli-Robson chart, respectively. Measurements ...

BACKGROUND Transient ocular misalignment as a complication of parabulbar and peribulbar anesthesia has already been reported in the literature. The aim of our study was to present a case of irreversible iatrogenic vertical strabismus after cataract surgery, which had to be operated on. METHODS Clinical and orthoptic evaluation of a female patient with vertical diplopia after phacoemulsificati...