December Archives: Researchers compared trab with canaloplasty, and found that although canaloplasty works well, the trab worked better- lower IOP (43% reduction vs. 32%), fewer meds post-op and lower rate of failure (IOP>18–4% vs. 12%). Canaloplasty is a good procedure- one just has to pick the appropriate patient, namely, one with less severe glaucoma,  at less risk of blindness, and a patient who declines the surgical risk of trab.