• A metallic tube is attached to the operating table or wrist rest, acts as a support for the assistant's hand, and provides free air flow during vitreous surgery while the patient is under local anesthesia.
Machemer R, Parel J, Hickingbotham D. Support and Air Supply Tube for Vitreous Surgery. Arch Ophthalmol. 1980;98(1):154. doi:10.1001/archopht.1980.01020030156020
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