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
Ludwik Marteau Ludwik Marteau Ludwik Marteau, originally Louis-François Marteau (c.1715, Paris - 2 November 1804, Warsaw) was a French-born Polish court painter who served under kings Augustus III and Stanisław August Poniatowski. All of his known works are portraits; both full size and miniatures. His father was a carpenter at the royal Palace of Versailles. One of his aunts on his mother's side was married to the Polish court painter, Louis de Silvestre. It is not known exactly when he arrived in Poland, but it appears that his teacher, Maurice Quentin de La Tour made the recommendation to go and Silvestre arranged