REFRESH PLUS^® instantly moisturizes to provide immediate, soothing relief for dry, irritated eyes. It comes in preservative-free single-use vials and has many of the same healthy qualities as your own natural tears. REFRESH PLUS^® has also been demonstrated to relieve post-LASIK dryness. If you have recently had LASIK surgery, please follow your eye doctor’s instructions regarding the use of REFRESH PLUS^®.