Fig. 43. Deep sclerectomy with collagen implant: deep sclerectomy and juxtacanalicular membrane peel. The deep flap is dissected anteriorly exposing the roof of Schlemm's canal. To increase filtration, a fine capsulorhexis forceps is used to peel off the juxtacanalicular membranes (yellow arrow) associated with the floor of Schlemm's canal. The internal scleral flap is excised along its base, slightly anterior to Schwalbe's line (green arrow). The deep sclerectomy specimen contains the roof of Schlemm's canal.