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August 1975

Vitreous SurgeryXII. New Instrumentation for Vitrectomy

Author Affiliations

From the Department of Retina Research, Retina Foundation, and the Retina Service, Massachusetts Eye and Ear Infirmary, Boston.

Arch Ophthalmol. 1975;93(8):667-672. doi:10.1001/archopht.1975.01010020629013

An improved instrument for removing vitreous tissue consists of a replaceable cutting tip and a micromotor that powers the cutting tip. The cutting tip consists of a helical cutter and a metallic tube housing the cutter. An automated power-control unit is also available to control evacuation, infusion, and speed of rotation of the instrument.

Several devices for monitoring the outflow of evacuation material and pressure in the eye and in the evacuation line are included. The cutting tip is illuminated by a fiber-optic system, which provides an additional factor of safety. The instrument contains a cleaning mechanism that eliminates the need for disassembling the cutting tip. When an automated control unit is not available, the vitreous nibbler may be used with manual suction, gravity-controlled infusion, and a simplified control unit.

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