Glaucoma is one of the most frequent reasons of vision decline and disability. One of methods of surgical treatment of glaucoma is an operation of filter type – sinus trabeculectomy. Aim. With the purpose of estimation of operative treatment results of morphological structure of the front part of the eye, hydrodynamics and functional indexes were studied in 49 patients (49 eyes) with glaucoma before and after surgical treatment. Methods and results. It was established that the operation had high hypotension efficacy. However, reduction of the anterior chamber depth (12,7%), size of the lens increase, resulting in further progression of cataracts and necessity of surgical treatment, were observed after operation. High percentage of intraoperative and postoperative complications, especially in patients with non-ischemic type of glaucoma, were identified after operation. Conclusion. This data indicates the necessity of changing tactics of treatment of patients with different clinical types of glaucoma regardless of the level of IOP and transparency of the lens.