“…Schumann et al [69]followed 116 eyes of 114 patients for a minimum of 1 year after treatment for advanced glaucoma with contact laser cyclophotocoagulation and compared their results with others [117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137]. The mean preoperative IOP of 35.0 mm Hg decreased to 18 mm Hg during the average follow-up of 19 months (range: 12–36 months) (fig.…”