Adolph Barkan, Med.

Birth date varies in various records:

8 Jan 1845 in Eperjes, Hungary, in U.S. Passport application, 29 Dec 1921

8 Jan 1845 in Hungary, in U.S. Passport application, 23 Jan 1918

8 Jan 1844 in Eperjes, Hungary, in U.S. Passport application, 14 Aug 1911

8 Jan 1844 in Germany, in U.S. Passport application, 16 Apr 1903

8 Jan 1845 in Hungary, in U.S. Passport application, 29 Apr 1899

1845 in U.S. Passport application, 1895

8/1843 Kellemes, in 1866 "Mediziner aus Wein"

"Adolph Barkan, a mid-19th century Central European–born and –trained ophthalmologist, spent almost half his nearly 91 years in a very successful career on the West Coast of the United States. His activities included intimate involvement in the development of a private medical school and with this school’s acquisition by Stanford University as its medical school. In retirement, he founded, financed, and stocked a large medical history library at that university. In the 1890s, Siegfried Czapski, the developer of the Carl Zeiss corneal biomicroscope, the direct precursor of today’s slitlamp, incorporated Barkan’s suggestion that Czapski replace the planned monoscopic binocular microscope with a stereoscopic binocular one, an essential modification of the device. This Zeiss invention lacked only the slit illumination of today’s instrument. Comments he wrote in a memoir-diary during World War I explain how he came to the decision to stray and to stay so far from his roots." (http://archopht.jamanetwork.com/article.aspx?articleid=1838754)

According to his academic record, he was born 8/1843 in Kellemes, now Lubotice, Slovakia. (http://genteam.at/index.php?option=com_gesamt&id=6170&limitstart=10...)