Other Information: Use only if single-use container is intact. Use before expiration date marked on container. Store at 59-86 degrees F (15-30 degrees C). Retain this carton for future reference. Misc: 50 vials. Moisturizing relief. Immediate, soothing relief for dry eyes. Also recommended for Lasik dryness (If used for post-operative (e.g., Lasik) dryness and discomfort, follow your eye doctor's instructions). Preservative-free. Sterile. refreshbrand.com. Make your dry eyes feel better with the drops doctors recommend. Refresh Plus Lubricant Eye Drops instantly moisturizes and relieves dry, irritated eyes with a fast-acting, long-lasting formula for sensitive eyes that has many of the same healthy qualities as your own natural tears. Demonstrated to improve dry eye when used after Lasik. Refresh Plus drops come in preservative-free single-use vials and are safe to use as often as needed, so your eyes can feel good - anytime, anywhere. What can cause dry eye? Heating and air conditioning; computer use and reading; wind and sun; certain medications; natural aging process; Lasik procedures. Made in the USA.