ĐÁNH GIÁ KẾT QUẢ BƯỚC ĐẦU CỦA PHẪU THUẬT MỞ BÈ TỪ BÊN TRONG (AB INTERNO)

Abstract

Objective: To evaluate the initial results of ab interno trabeculotomy. Subjects and methods: Prospective descriptive study on the results of ab interno trabeculotomy in 32 eyes (29 patients) diagnosed with open-angle glaucoma at the Glaucoma Department, Vietnam National Eye Hospital from March 2022 to December 2022. Selective criteria included: Uncontrolled primary open-angle glaucoma eyes with filtering surgery beside using ≥ 2 glaucoma drugs. Intraocular pressure, number of medication were collected and processed according to the medical statistical algorithm. The success was determined with on 3 criterias: The intraocular pressure, number of drugs and complication at 1 week and 1 month. Results: The mean preoperative IOP was 31.69 ± 9.76mmHg reduced to 20.78 ± 8.73mmHg (28.84 ± 41.13%) after 1 week. 1 month after surgery, the IOP decreased to 18.69 ± 5.57mmHg (37.12 ± 23.19%). The number of eyes with IOP ≤ 18mmHg was 16 eyes (50%) of which 13 eyes (40.6%) didn’t require additional medication after surgery 1 month. At this time, the number of eyes with IOP ≤ 21 mmHg was 24 eyes (75%) of which 17 eyes (53.1%) didn’t need additional medication. The number of hypotensive drugs dropped from 3.09 ± 0.89 to 0.78 ± 1.13 after 1 week and continued to drop to 1.06 ± 1.34 after 1 month. 1 week after surgery, there were 9 eyes with glaucoma (28.1%) and after 1 month, there were 7 eyes with glaucoma (21.9%). The most common complication was hyphema however most of the cases with hyphema were mild and self-limited. Conclusion: The outcomes of ab interno trabeculotomy appears to be successful in treating uncontrolled primary open-angle glaucoma eyes with prior incisional glaucoma surgery beside using ≥ 2 different hypotensive drugs. The surgery reduced both IOP and the number of medication significantly.