Bimatoprost 0.03% preservative free monodose eye drops solution (BUDPF) is a new product composed of a synthetic prostamide, bimatoprost 0.3% in a preservative free formulation. This new product is used as a once-daily topical ocular therapy for the reduction of elevated intraocular pressure (IOP) in patients with open-angle glaucoma, or ocular hypertension, and that are sensitive to preservatives. The individual active component of BUDPF, bimatoprost is an established therapeutic agent with well documented IOP efficacy (1). Prostamides, such as bimatoprost, are believed to lower IOP mainly by increasing uveoscleral outflow. The comparator, Preservative Free Latanoprost 0.005% Unit Dose (LUDPF, eg. Monoprost®), was recently launched in a number of countries in Europe and contains latanoprost in a new preservative free formulation.