I was diagnosed with glaucoma four years ago and was immediately put on Xalatan
once a day both eyes. Two years later was taken off Xalatan and put on Cosopt & Alphagan, twice a day, Lumigan once a day, both eyes. For the past two years my diopter went from -4.00 both eyes, to -9.50 left eye, -7.00 right eye, as of today, in steady progression. I can already tell I'm probably not seeing 20/40 presently and need stronger contacts.