title: New trephine for keratoplasty with interchangeable blade.
mesh_terms: D016039:Corneal Transplantation; D006801:Humans; D009885:Ophthalmology / Q000295:instrumentation*; D013193:Stainless Steel; D014207:Trephining / Q000295:instrumentation*
chemical_list: D013193:Stainless Steel