I wonder if anyone else is using Dorzolamide Timolol (Actavis) 2 x a day for their glaucoma? If so, have you noticed the 10ml bottle never seems to last 45 days?
Almost all people on glaucoma drops feel they don't last long enough. Problems can be: less medicine in bottle than stated, dropper delivers larger drop than planned, person puts more than one drop in the eye.