we compared the ocular-hypotensive efficacy and systemic and ocular safety of an ophthalmic solution of levobunolol ( 0.5 % and 1 % ) twice daily , with timolol ( 0.5 % ) twice daily in a long-term double-masked study of 391 patients with open-angle glaucoma or ocular hypertension .
C0040233
timolol
C0017612
open-angle glaucoma