From the manufacturer's website:
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 long-lasting dry eye symptom relief at night. It is also Preservative-Free.
- For use as a lubricant to prevent further irritation or to relieve dryness of the eye.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.