purpose: to determine the indications for penetrating keratoplasty (pk) in iran over an 11-year period. methods: all eye bank records of patients who underwent pk from 1994 to 2004 at ophthalmologic centers throughout iran were reviewed. results: during this 11-year period, a total of 19,668 cases were operated. the most common indication for penetrating keratoplasty was keratoconus (34.5%), fo...

Penetrating aortic ulcers were initially described by Shennan in 1934 [1]. Shumacker and King reported the first operative repair of a ruptured descending aorta secondary to a penetrating aortic ulcer in 1959 [2]. The clinical and pathologic entity of penetrating aortic ulcers was not established, however, until 1986 by Stanson [3]. Since that time, the body of literature on this disease has in...

introduction: there are significant gender differences in the epidemiology and presentation of cardiovascular diseases (cvds), physiological aspects of cvds, response to diagnostic tests or interventions, and prevalence or incidence of the associated risk factors. considering the independent influence of gender on early dire consequences of such diseases, this study was conducted to investigate...

in any patient with a history of penetrating thoracic trauma, cardiac injury must be kept in mind. here, we describe a 36 years-old female referred to this hospital with severe chest pain and hypotension. after primary evaluation and suggestion of ami, streptokinase was started for the patient and because of deterioration of vital signs, cardiac surgery consultation was requested. after perform...

PURPOSE Penetrating keratoplasty and epikeratoplasty have been utilized in the surgical treatment of keratoconus. Comparison of the relative efficacy of each procedure in achieving visual outcomes has not been achieved due to limited numbers of cases and follow-up in previous series. METHODS All patients who underwent either penetrating keratoplasty or epikeratoplasty for keratoconus between ...

Penetrating cranial injury is a potentially life-threatening condition. The majority of war injuries are high-velocity penetrating cranial injuries; but in civilian cases, most penetrating cranial wounds are low-velocity type. We report an interesting case of transorbital penetrating cranial injury with a knife-sharpening stone made up of ceramic in a 28-year-old male. The pertinent literature ...

An account is given of a cloud-chamber investigation of penetrating showers. It is con­ cluded that the cloud-chamber data are consistent with Janossy’s counter data and also with the view that penetrating showers consist of a small number of penetrating ionizing par­ ticles which are mainly mesons. There is no evidence to show that the showers are produced by processes other than those postula...