th al mic ▁surg ery . ▁▁▁ ▁One ▁of ▁his ▁better - known ▁patients ▁was ▁composer ▁Fr éd éric ▁Ch op in , ▁whom ▁Ch el ius ▁treated ▁for ▁se ps is ▁of ▁the ▁finger . ▁After wards , ▁a ▁grateful ▁Ch op in ▁gave ▁a ▁private ▁concert ▁in ▁Ch el ius ' ▁home . ▁Today , ▁the ▁building ▁where ▁Ch el ius ▁lived ▁from ▁ 1 8 3 0 ▁until ▁ 1 8 7 6 ▁is ▁the ▁site ▁of ▁the ▁Kur pf äl z isches ▁Museum ▁in ▁Heidel berg . ▁ ▁Selected ▁writ ings ▁▁ ▁Hand buch ▁der ▁Ch ir urg ie : ▁zu ▁dem ▁Geb ra uche ▁bei ▁seinen ▁Vor les ungen ▁( Man ual ▁of ▁surg ery , ▁derived ▁from ▁lect ures ); ▁ 1 8 2 2 ▁ ▁Zur ▁Le hre ▁von ▁den ▁St aph yl omen ▁des ▁Aug es ▁( L ess on ▁on ▁st aph yl oma ▁of ▁the ▁eye ) ▁ ▁Hand buch ▁der ▁Augen he il k unde : ▁zu ▁dem ▁Geb ra uche ▁bei ▁seinen ▁Vor les ungen ▁( Man ual ▁of ▁o ph th alm ology , ▁derived ▁from ▁lect ures ); ▁ 1 8 4 4 ▁▁ ▁Über ▁die ▁durch s icht ige ▁Horn h aut ▁des ▁Aug es , ▁ihre ▁Function ▁und ▁ihre ▁k rank haft en ▁Ver änder ungen ▁- ▁On ▁the ▁transparent ▁cor nea ▁of ▁the ▁eye , ▁its ▁function ▁and ▁path ological ▁changes . ▁ ▁References ▁▁ ▁This ▁article ▁is ▁based ▁on ▁a ▁translation ▁of ▁an ▁equivalent ▁article