twenty-six patients with open-angle glaucoma or ocular hypertension were studied in a concomitant double-masked clinical trial lasting three months , in which the ocular hypotensive efficacy and safety of levobunolol ( 0.5 % ) and timolol ( 0.5 % ) , topically administered twice daily , were compared .
C0017612
open-angle glaucoma
C0040233
timolol