The authors analysed the effect of 100 trepanotrabeculectomy operations performed in primary (79 cases), in congenital (16 cases) and in secondary (5 cases) types of glaucoma. The operation itself could normalize the intraocular pressure in 87% of the cases, in 8% the intraocular pressure was normalized by miotics after the operation. In 3% of the cases the pressure could not be controlled even by the additional application of miotics and in 2% of the cases the operation produced a hypotony. The intraoperative and postoperative complications were temporary and without definitive sequels. As the blebs were present in 76% of cases, the authors concluded that the drainage took place under the scleral and conjunctival flap. In the smaller group, the blebs were absent but the intraocular tension was normalized. In these cases it is supposed that Schlemm's canal represents the main route of drainage. According to the authors' experience, trapanotrabeculectomy represents an operation which is easy to perform, which can not cause severe operative or postoperative complications and which can achieve normalization of the intraocular pressure, either by itself or with miotics, in a high percentage of cases.
Adolescent Adult