Vitreous surgery.
D000368:Aged; D006470:Hemorrhage / Q000517:prevention & control; D006801:Humans; D008029:Lighting; D008297:Male; D008566:Membranes / Q000601:surgery; D008722:Methods; D009885:Ophthalmology / Q000295:instrumentation; D009887:Ophthalmoscopy; D012163:Retinal Detachment / Q000601:surgery*; D013525:Surgical Instruments; D014822:Vitreous Body / Q000601:surgery*