[Surgical operation of the trabeculum without a microscope (author's transl)].

For the first time the authors report about 29 surgical operations on the trabeculum corneoscleral carried out without operation-microscope in Central Africa. Four trabeculotomies of glaucoma chromium simplex were operated with a rate of success of only 50%, and 11 trabeculotomies of congenital glaucoma were operated with carried on with a pair of self-made trabeculotoms; the seven following operations with the trabeculutoms by Sourdille and Paufique. Because only magnifying spectacles were available for the operations besides good lighting and simple instruments, a method of diaphanoscopy was developed, which facilitated the search of the canal of Schlemm. Fourteen trabeculectomies of glaucoma chronicum simplex, among them 3 in combination with the intracapsular cryoextraction of the lens, were successful in 85% of all cases in regard of the regulation of pressure. The good results encourage us to recommend these methods for a wide use in Africa, to preserve the visual power of many patients who can't be treated here by the modern technics with microscope.