Systane Nighttime Lubricant Eye Ointment 3.50 g (Pack of 4) - SYSTANE NIGHTTIME Ointment is designed to keep your eyes lubricated and comfortable while you sleep. It forms a smooth, protective layer for the eyes that provides dry eye symptom relief at night. USES: For use as a lubricant to prevent further irritation or to relieve dryness of the eye. Directions For Use: Pull down the lower lid of the affected eye and apply a small amount (one-fourth inch) of ointment to the inside of the eyelid.