Dear Joanner, Hi,I read your problem what you are suffering from since last few days.Let me tell you one thing that most of the antigalucoma medications have stinging sensation and irritation as side effect depending on person to person. It happens due to the preservative present in the solution.It depends on the sensitivity of the person and sometime genetically related.The second point is these drops may cause contact dermatitis in your eyes which causes bruise and irritation in and around the skin. So first of all check whether you have changed the brand of your antiglaucoma drops or any new drops have been added to the previous one.Stye formation will cause more of swelling, pain and discharge with pus point.There is high chance that you are not suffering from any stye.So I would advise you to reevaluate your drops and rule out any contact dermatitis with the present medication.Do some hot fomentation and use some tear substitute for the time being as this may help you in giving some soothing effect.If your symptoms are not getting relieved in a couple of days then do check with your glaucoma specialist....TC ..Dr Ajay Shankar Kar, Cornea consultant, Sankar Foundation eye hospital, Visakhapatnam.