At age 78 I have been fighting glaucoma for over 30 years. I'm currently on preservative free cosopt plus pilocarpine and rocklatan. My eyes are red all the time from pilocarpine, but I do not have pain. I do use refresh perservative free eye drops for dryness and rough corneas also. Periodically I do go down to Bascom Palmer Eye Research center in Miami to see if there is anything new they recommend. My Glaucoma doc has done a fellowship at Bascom.
Sadly glaucoma seems to be a one way street. After 30 years, I have no central vision in left eye, and have lost about 50% of field in right eye. But I am very thankful for docs and meds to enable me to still see 27 inch computer screen with high contrast well.