Travatan Z is used to relieve eye pressure buildup due to glaucoma and ocular hypertension. Travatan Z works by increasing the amount of fluid that drains from the eye to reduce pressure. Travatan Z is a prescription drug that is indicated to lower excessive pressure in the eye caused by glaucoma or other eye conditions such as ocular hypertension. Travatan Z works by regulating the flow of fluids in the eye. This mechanism of Travatan Z helps keep the eye pressure constant. Travatan Z is typically used on a daily basis. Be sure to remove your eye contacts before using Travatan Z to reduce the risk of infection. Wait for at least 15 minutes after using it before putting back the lenses in your eyes. Travatan Z is in a class of medicines called prostaglandin analogs.