title: Retinal cryoring: a new instrument for retinal surgery.
mesh_terms: D002829:Choroid / Q000601:surgery; D003452:Cryosurgery / Q000295:instrumentation*; D006801:Humans; D012160:Retina / Q000601:surgery*; D012591:Scleral Buckling / Q000295:instrumentation; D013525:Surgical Instruments