background: causes of blindness in children vary according to the region and socioeconomic development. within a given country these causes vary with passage of time. this reflects different levels of socioeconomic development and provision of healthcare services. this cross-sectional study was undertaken to estimate the major causes of severe visual impairment in children and specially prevent...

background and aim: attention is an important cognitive process that is necessary for educational purposes. blind people are deprived from the most widely used human sense, the sense of vision. there are reports that blind individuals have a significantly better performance in attentional tasks, as compared with normal subjects. the purpose of this study was to evaluate sustained auditory atten...

background: this study was carried out in opi-agu a tropical semi-urban autonomous community comprising of three villages in enugu state, nigeria, between the months of april and june 2010. it was designed to determine the prevalence of onchocerca volvulus infection and assess the perception of the disease among the inhabitants of this community. methods: a total number of 305 individuals compr...

purpose : to investigate long-term ocular manifestations of ocular behcet’s disease (bd), and the causes for blindness methods : in august 2008, at shariati hospital of tehran (behcet unit) all files of the ocular bd patients from 1976 to 2008 who were legally blind (visual acuity=20/200 or less) at least in one eye at the last visit and had at least three years of follow-up were reviewed and t...