GONIOTOMY KNIFE AND SURGICAL CONTACT GLASS

Abstract

THE TECHNIC of goniotomy in treatment of congenital glaucoma has recently been published.¹In the present communication the description and specifications of the instruments are given. GONIOTOMY KNIFE The shaft of the goniotomy knife (figs. 1 and 2) is tapering, oval and 25 mm. in length, the longer diameter of the oval being parallel with the cutting edge of the blade. The measurements of the blade and shaft are such that the wound is sealed throughout the operation. To secure the shape of the blade and the degree of taper of the shaft which will, on the one hand, prevent loss of aqueous and, on the other, not offer too much resistance to easy insertion and passage across the chamber, exact specifications, as given on the mechanical drawing to 0.01 mm., must be followed. The degree of taper of the shaft is not so great that it resists insertion