Since you have recently had surgery we feel you need to ask the surgeon about this. This is a generalization. Trouble opening the eyes in the morning often means they are drying out during sleep. Don't sleep under fan or have air blowing across eye. latanoprost often dries eyes out during sleep. You can ask your doctor about this. We have our patients put latanoprost or their glaucoma drop in about 30 minutes before they go to bed. Then at bed time we have them use a lubricating gel such as Genteal Gel, Refresh PM, Refresh Liquigel. It needs to say "gel" as its thick enough to keep eyes from drying out all night.