I have never been a big eye drop user as I've had contacts and glasses for years without a dry eye symptom. Last year I had Lasik surgery, which left me using a plethera of drops on a daily basis. Because you are unable to use eye drops with preservatives after the surgery, I opted for the Allergan Optive Sensitive Eye Drops for daily use. One of my doctors told me about putting these individual vialed drops in the refrigerator to keep them cold prior to use. I must admit I continously do this as it is such a soothing feeling to a dry, tired eye. It's been over a year now and I use these drops as needed, which is less and less often as time goes by. I do believe my Lasik surgery recovery went to great because of the Optive Eye Drops and their ability to actually get rid of the dryness feeling without having to reapply often. I would recommend the Allergan Optive Lubricant Eye Drops to anyone looking for an eye drop that works amazingly and eleviates any signs or symptoms of dry eye.