Eye drops Bonanza!

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After waiting 18 months for a checkup instead of the year it said on my medical papers I finally got a hospital appointment, I have POAG and the timalol and latanaprost combination drop once a day in the morning wasn't hacking it anymore and my eye pressures were back up to 26 each eye.I now have to take Cosopt twice a day and also latanaprost at night does anyone have any experience of this combo and whether it works and how long will this work for etc etc