Latanoprost

Latanoprost, sold under the brand name Xalatan among others, is a medication used to treat increased pressure inside the eye.[1] This includes ocular hypertension and open angle glaucoma.[1] It is applied as eye drops to the eyes.[1] Onset of effects is usually within four hours, and they last for up to a day.[1] Common side effects include blurry vision, redness of the eye, itchiness, and darkening of the iris.[1]... [wikipedia]