title: Extended use of vitrectomy instruments.
mesh_terms: D000328:Adult; D002387:Cataract Extraction / Q000295:instrumentation; D006801:Humans; D013508:Ophthalmologic Surgical Procedures; D009885:Ophthalmology / Q000295:instrumentation*; D009887:Ophthalmoscopy; D013525:Surgical Instruments; D014822:Vitreous Body / Q000601:surgery