Hi Sir I Hav A Daughter 4year...her Right Eyecorner Is

Hi sir i hav a daughter 4year...her right eyecorner is coverd with skin by born mayb..we r not sure ws it by born or not...the prblm is it spreading quickly over the cornia n the white portion..she is having prblm to move the eyeball due to it n its covering also frm the upeer side of the eye..pls tel me is it cureable fr frevr ???i m worried