refresh plus eye drops -preservative-free- soothing relief- single-use vials (100 ct.) refresh 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.