I have been perscribed Dorzolamide HCL 2% eye drops, 1 drop in each, twice daily, along with my current regimen of Travatan Z, 1 drop in each at nite time only. This is my 2nd day on the Dorzolamide, but hopefully my last! When applied, no stinging and no burning, for only a second, then... get ready for the BURNING, at least 25 seconds. The discomfort is so severe I visulize bleach being poured into the eye. When I can open without watering, the lower lid is cherry colored with the eye feeling tight. About an hr later the eye feels ok. I can not believe the pain caused by this drop, certaintly not twice a day. Your thoughts, please