Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 1 1 1972 06 15 65 77 A. Nadimi 2015 10 03 A survey on the cause of blindness in Iran was carried out among 870 blinds from all parts of the country. 305 people with the same cause, 27 with different causes were blind from both eyes and 538 were blind from one eye. In present paper the first ten causes of blindness is pointed out and these causes are compared in the three different zones of ten countries, also the cause of blindness in different age groups are described. 36/1% of blindness is due to contagious conjunctivitis and trachoma, (In 1956 these diseases were 56.3% as the cause of blindness.), cataract 14.6%, physical agents 13.6% and glaucoma 10% are some of the other important causes. https://ijph.tums.ac.ir/index.php/ijph/article/view/1518 https://ijph.tums.ac.ir/index.php/ijph/article/download/1518/1499