Concerning the Technic of Multiple Micropuncture for the Treatment of Separated Retina: Additional Devices

Abstract

Single micropins of 20-percent iridium-platinum were found to be more satisfactory without insulation, because they could be cleaned by heating briefly to redness in alcohol or Bunsen flame. Different methods of mounting pins for greater facility are illustrated and the author explains how the threads can be removed from the field by cutting them off (after the pin is inserted) next to a knot placed close to the eyelet or by use of an accessory running thread through the eyelets. Threads are then cut off close to this knot, which is left as a marker to reduce the risk of loss. Two new styles of micropins for use with a special modification of Beaupre forceps are described. These are shaped to receive rubber tubing as easily replaceable insulation at the tips, as compared with enamel coatings. The grid pin has three vertical bars of wire above the cross-bar stop and gives a large grasping surface for forceps. The ring-stop pin has soldered onto it a ring of fine platinum wire at the stopping point, 1.5 or 1.75 mm. from the penetrating tip. Accessories for localization of tears have been refined to the point where they are now exhibited and made available. A phantom manikin for this purpose is described together with the method of use. All instruments herein described were made with the cooperation of, and are obtainable from the U. S. Optical Co., 671 South Anderson Street, Los Angeles, California. Form the Department of Ophthalmological, University of Southern California. Presented before the Section on Ophthalmology, American Medical Association, at Cleveland, June 12, 1934.