Microimpulse laser trabeculoplasty as a treatment method for primary open-angle glaucoma

Abstract

Purpose. Analysis of the results of treatment of primary open-angle glaucoma by the method of microimpulse laser trabeculoplasty with a power of 1000 mW and different operating cycles. Material and methods. 33 patients (36 eyes) who underwent microimpulse laser trabeculoplasty were included in the study: in the 1st month, MLT with a power of 1000 mW and a duty cycle of 15% was performed in 19 patients (21 eyes), in the 2nd month MLT s rabochim cyclom 10% 14 patients (15 glasses). Criterion of inclusion of development of patients with primary open glaucoma and pigmented angular anterior camera. Observation and measurement of VGD is carried out an hour after the laser procedure, after 10 days, and after 1; 3, 6 months. Results. In the MLT group with 15% duty cycle, at 6-month follow-up, we noted a decrease in IOP by more than 20% of baseline or more than 3 mmHg, in 78% of cases, however, in the MLT group with a 10% duty cycle, this figure was only 33%. Also, in the MLT group with 15% workers, there was a decrease in the number of antihypertensive drugs used by 32%, while in the MLT group with a 10% work cycle, this figure was 9%. Conclusions. Treatment with micropulse laser trabeculoplasty for primary open-angle glaucoma is a new method that affects pigmented cells without thermal damage. However, to achieve a hypotensive effect, the laser power should be 1000 mW, and the duty cycle is 15%, since with a duty cycle of 10%, no hypotensive effect is observed in the long-term observation period. Keywords: glaucoma, laser trabeculoplasty, pigmented anterior chamber angle