As a copywriter, I understand the importance of summarizing crucial information. Brimonidine tartrate is a highly effective medication that helps manage symptoms and progression of open-angle glaucoma. It works by reducing the production of aqueous humor and increasing its outflow, which in turn lowers the pressure inside the eye. This alleviates discomfort and prevents further damage to the optic nerve. Overall, brimonidine tartrate plays a vital role in preserving vision and improving the quality of life for those affected by open-angle glaucoma.