tokens: RESULTS : During the 3 - year follow - up , 71 . 0 % of implanted eyes had an IOP increase of 10 mm Hg or more than baseline and 55 . 1 % , 24 . 7 % , and 6 . 2 % of eyes reached an IOP of 30 mm Hg or more , 40 mm Hg or more , and 50 mm Hg or more , respectively .