Genothalmic Javal Schiotz keratometer (ophthalmometer)

Historical Significance: Genothalmic refers to the trade name of ophthalmic instrumentation manufactured by the General Optical Company, Mt Vernon New York. They probably ceased trading before 1930, but may have continued as Geneva Optical Co (est. 1875) and the Kryptok Sales Company, Inc as these companies traded from the same address. Louis ?mile Javal (1839 - 1907) was a French ophthalmologist He is remembered for his studies of physiological optics and his work on strabismus. He constructed the Javal Schiotz Ophthalmometer with his student Hjalmar August Schi?tz . Hjalmar August Schi?tz (1850-1927) was a Norwegian professor of medicine with the obligation of teaching eye medicine from 1901 to 1921. He presented the first version of the Javal-Schi?tz ophthalmometer to a the international congress of eye specialists in Milan in 1880 and an international medical congress in London in 1881. Patent October 24 1911 refers to US Patent No 1,006,825 held on file cat No 1316. Pamphlet and ephemera file Drawer 2