I was diagnosed many yrs ago with dry eye I was blinking every 2 seconds and driving home off night duty was a nightmare as my eyes felt as they were not only sore but clouding over.The eye surgeon Px'd Restasis eye drops . I have no extended benefits and are expensive as they come in a box of 30 pippets to use twice a day then you are supposed to throw the pippet out . My eye dr told me to not throw them out as they do not start to deteriorate so to keep them in a little sealed pill bottle.1 pippet lasts about 3 days now. When I 1st used them they stung like a buggar but 'I carried on for England' anyway long story short I now use them only once a day which is great as they now last me double the time.The Dr has told me to definitely NOT go back to the twice a day ( not sure why) and to just use a moisturings drop of an OTC . Restasis doesn't work like normal eye drops they actually stimulate your tear ducts to produce tears,it's NOT a cure though so will have to use them for life,small price to pay though. Hope this is useful Warren