purpose : to determine the anatomical site and underlying causes of blindness and severe visual impairment (bl/svi), in schools for the blind in east azerbaijan state with determining potentially preventable and treatable causes. methods : between october 2003 and november 2004 a total of 124 students attending three schools for the blind in east azerbaijan state were examined clinically and da...

BACKGROUND Rapid assessment of avoidable blindness provides valid estimates in a short period of time to assess the magnitude and causes of avoidable blindness. The study determined magnitude and causes of avoidable blindness in India in 2007 among the 50+ population. METHODS AND FINDINGS Sixteen randomly selected districts where blindness surveys were undertaken 7 to 10 years earlier were id...

PURPOSE To determine the prevalence and causes of blindness and visual impairment (VI) in Yazd, central Iran. METHODS This population-based, cross-sectional study was performed on adults aged 40-80 years, residing in Yazd district, in 2010-2011. Eligible subjects were selected using cluster random sampling. Each participant underwent an interview and complete ophthalmologic examination. Blind...

BACKGROUND/AIMS In terms of blind-person years, the worldwide burden of childhood blindness is second only to cataracts. In many developing countries, 30-72% of childhood blindness is avoidable. The authors conducted this study to determine the causes of childhood blindness and visual impairment (VI) in Botswana, a middle-income country with limited access to ophthalmic care. METHODS This stu...

purpose: to estimate the magnitude and causes of visual impairment (vi) in subjects aged ≥ 50 years in varamin district in 2009 using the proposed method by the world health organization (who). method: this cross sectional population based survey was performed in varamin targeting people over the age of 50 years using the proportional probabilities to size and cluster compact segment sampling m...