Strabismus hook, Graefe, steel and ivory, by Collin of Paris, late 19th century Strabismus hook 1871-1900
Strabismus hook, double head, steel and ivory, by Charriere of Paris, mid 19th century Strabismus hook 1831-1870
Two Graefe's strabismus hooks, steel, nickel-plated, by Collin of Paris, c. 1890 Two Graefe's strabismus hooks 1880-1900
Three strabismus hooks, Graefe's, steel, nickel-plated, by Collin of Paris, 1870-1930 Three strabismus hooks 1870-1930
Strabismus hook, single head, steel and ivory, by Collin of Paris, mid 19th century Strabismus hook 1831-1870
Strabismus hook, steel and ivory, probably French, second half 19th century Strabismus hook 1851-1900