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March 1981

A Bipolar Coaxial Microprobe for Safe Transvitreal Diathermy

Author Affiliations

From the Bascom Palmer Eye Institute, University of Miami School of Medicine (Mr Parel and Dr O'Grady), and the Department of Ophthalmology, Duke University Eye Center, Durham, NC (Dr Machemer).

Arch Ophthalmol. 1981;99(3):494-497. doi:10.1001/archopht.1981.03930010496024

• We present a new 22-gauge transvitreal bipolar diathermy microprobe. With the use of the coaxial principle, the current flows only at the probe's end surfaces. Because of its small size and end-on coagulation effect, and when used in conjunction with a low-frequency diathermy unit, the probe can be used safely on vessels lying directly on the retinal surface and close to the optic nerve head. We report three cases to demonstrate the usefulness of this instrument.

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