Travo-Z Eye Drop helps reduce pressure in your eyes (ocular hypertension) that can lead to an illness called glaucoma. It may be used alone or with other eye drops. Do not use it too often as that can make it less effective. You should only use it in the affected eye and take it regularly as prescribed by your doctor. If you stop taking it, the pressure in your eye will not be controlled. This could lead to a loss of sight.