Louis Émile Javal of text, but make short rapid movements (saccades) intermingled with short stops (fixations). Javal's observations were characterised by a reliance on naked-eye observation of eye movement in the absence of technology. Javal's interest in strabismus was due to the disorder affecting his father and sister. Javal himself had heterochromia. At middle-age Javal developed glaucoma, and by 1900 was totally blind. He was a friend of Ludwik Łazarz Zamenhof (1859-1917), the inventor of Esperanto, and he stressed the importance of learning this language by the blind. In addition, he was involved in social reform issues that included education and circumstances surrounding
Mark Zamenhof usage of Polish national dresses. The police in the exploration suspected, that that anonymous letter was written by Zamenhof, because he led that time a concurs school for girls and already sooner had written various denunciation letters. Zamenhof indeed that time shared the possession of the school for Jewish girls. In 1866 in it were 63 pupils. Several Polish biographers write that Mark Zamenhof was teacher of the Bialystok high school (actual school). If he instructed in that high school, probably that was only for a short episode, that probably happened after the "January Uprising" (so in 1864). Prospective hire