Color blindness ( Daltonizm ) is a congenital or acquired visual impairment , which manifests itself in the inability of the eye to distinguish one or more primary colors . The disease was first described in 1794 by the English scientist John Dalton , who observed this disease in himself and several members of his family .
Why can ' t color blindness be cured ? Why is color blindness more common in men ?
Which professions are prohibited for colorblind people ?