purpose: to determine the anatomical sites and causes of severe visual impairment (svi) and blindness in children attending a school for the blind in ahvaz. methods: in this case series study, all 51 students of the only school for the blind in ahvaz were examined by two ophthalmologists. blindness and svi were defined according to the world health organization (who) criteria as visual acuity l...

purpose: to determine the prevalence and causes of blindness and low vision in yazd provice in 2008. methods: a population-based cross-sectional study was performed on inhabitants of in yazd province in 2008. using multistage cluster sampling, sample size was calculated based on the distribution of the total population of yazd province derived from national census and estimated rates of blindne...

objectives: talking about needs, it means to consider the reasons of human behavior. because such behavior starts with one or several needs which will cause to develop different societies according to the degree of civilization, and also social-cultural factors treat differently with blinds, so these different circumstances can create different needs and motivation for them. methods: on this ba...

purpose: to determine the prevalence and causes of blindness and low vision in tehran province in 2005. methods: a population-based cross-sectional study was carried out involving all habitants living in tehran province in 2005. the study design was according to the world health organization recommendation methods and also a pilot study preformed among rural and urban areas of karaj. it was a m...

purpose : to evaluate the incidence and risk factors of severe visual impairment and retinopathy of prematurity (rop)-related blindness in a tertiary eye hospital in iran methods : in a cross-sectional study, clinical data of premature infants screened for rop in farabi eye hospital during 2003-2007 were reviewed. characteristics of advanced stages of rop (stage 4 or 5) were determined and comp...

background : visual impairment is a very important public health problem. in iran, reports of visual impairment and blindness have been published from the urban population while the prevalence of visual impairment in the rural popu-lation has not been reported. the purpose of this study to determine the prevalence and causes of visual impairment, in a rural population in district of based on ag...

purpose: to describe the methodology and implementation of the investigation for prevalence and causes of visual impairment in tehran province. methods: this population-based cross-sectional study was conducted on all urban and rural residents of tehran province in 2003. a stratified cluster random sampling with probability proportional to size procedure was used. first, best pinhole-corrected ...

background: considering population aging in iran and the importance of cataract surgery in the old age, this study was performed to show the cataract surgical rate (csr) between 2006 and 2010 in tehran province. methods: eighteen centers were randomly selected from cataract surgery centers in tehran. in each center, one week in every season was randomly selected and the number of cataract surge...

purpose : to determine the prevalence of visual impairment, blindness, and low vision among the elderly population of sari in northern iran methods : random cluster sampling of 1,185 selected individuals over 54 years of age, of whom 79.1% participated. participants underwent eye examinations to test presenting visual acuity (va), best corrected visual acuity (bcva), and refraction. results : b...