Fig. 2

Surgical procedure. a A superficial and parabolic scleral flap was made, and a deep scleral flap of 3 × 3 mm was dissected, opening Schlemm’s canal(SC). b A twisted 6/0 polypropylene suture was prepared. c The loop tip was inserted into one ostium of SC. d The tip came out from the other ostium through 360-degree advancement. The loop tip was then wrapped with the 10/0 suture. e The 6/0 suture was withdrawn and replaced by a twin 10/0 suture in SC. f The 10/0 suture was tied with a tension distending the trabecular meshwork