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 Czaplic, Michał Jerzy Mniszech, Ignacy Potocki, Andrzej Mokronowski, Stanisław Poniatowski, Stanisław Trembecki, Andrzej Hieronim Zamoyski, Grzegorz Piramowicz, Franciszek Bohomolec and (one of his best-known) Hugo Kołłątaj. In 1831, following the November Uprising, most of his portraits were transported to Saint Petersburg by order of Tsar Nicholas I. Three years later, they were burned in an effort to destroy significant records of Polish culture. 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;