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When was the surgery? what preservative free tears have you used? why did you not do the plug?
you can try something called Refresh Celluvisc every 1-2 hours, this is by far better than anything you listed and tried. The plug works wonderfully in my opinion and can work as well as Restasis in someone like you. Regards ***** *****
Celluvisc is over the counter indeed, the plug typically lasts a couple of years, can easily be removed if it is bothersome, I would recommend it, Dr. Stevens