An ocular implant and delivery system having a channel tool adapted to extend through at least a portion of Schlemms canal of a human eye and to determine whether the Schlemms canal portion provides a suitable location for the delivery of an ocular implant an ocular implant adapted to be disposed within Schlemms canal of a human eye and a cannula comprising a distal opening adapted to deliver the channel tool and the ocular implant into Schlemms canal of the eye. The invention also provides a method of treating glaucoma in a human eye including the steps of inserting a distal exit port of a cannula at least partially into Schlemms canal of the eye delivering a channel tool through the cannula into Schlemms canal delivering an ocular implant through the cannula into Schlemms canal and removing the channel tool and the cannula from the eye while leaving the ocular implant in place within Schlemms canal.