Background: The accuracy and the reproducibility of radiotherapy can be provided by using immobilization devices such as thermoplastic masks. In head and neck cancer radiotherapy, the patients are mostly immobilized by using thermoplastic masks. In this study, the effect of the thermoplastic mask to the surface and buildup region doses was investigated by using Markus parallel plate ion chamber...

BACKGROUND Dental professionals are among the occupational groups that experience ocular injuries and problems as they perform their daily dental works. The purpose of the study was to determine the ocular health practices by dental surgeons in Southern Nigeria. METHODS This cross-sectional study was conducted on dental surgeons working in Southern Nigerian tertiary oral healthcare centers us...

Background: COVID-19 pandemic mitigation requires evidence-based strategies. Because can spread via respired droplets, most US states mandated mask use in public settings. Randomized control trials have not clearly demonstrated efficacy against respiratory viruses, and observational studies conflict on whether predicts lower infection rates. We hypothesized that statewide mandates were associat...

patients and methods sixty children aged between 2 and 12 years, and scheduled for on-pump surgery due to a congenital heart disease were randomly assigned into two groups. oral midazolam (0.5 mg/kg up to 15 mg per patient) and dexmedetomidine (2 µg/kg) were administered 45 minutes pre-anesthesia. children’s anxiety, mask acceptance behavior, hemodynamic measures, and cardiopulmonary outcomes w...

Several guidelines for dental practice have been published by associations and regulatory boards since the beginning of pandemic. Initially, all non-emergency treatment were suspended. Healthcare personnel around world are gradually expanding back to elective procedures. International updated recommendations alert that professionals must maintain regular observation local health department repo...

Currently there is considerable debate as to the nature of the pathways that are responsible for the perception and motor performance. We have studied the relationship between perceived speed, which is the experiential representation of a moving stimulus, and the speed of smooth pursuit eye movements, the motor action. We determined psychophysical thresholds for detecting small perturbations in...

results males (8,593 patients) were more likely to have eye trauma than females (1,262). the mean age for the outpatient cases was 20.3 ± 16.39 years and for the inpatient cases it was 22.7 ± 18.95 years. the workplace was the most common site for trauma and the cornea was the most reported anatomically injured site. for those patients who had not used safety and protection equipment, 93.1% wer...

purpose: dry eye syndrome is a multifactorial disorder of the tear film and ocular surface that results in eye discomfort, visual disturbance, and often ocular surface damage. studies suggest that the prevalence of clinically diagnosed dry eye syndrome (des) is 0.4%. to 0.5%, which is highest among women and the elderly. the burden of des can be substantial, affecting visual function, daily act...