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iStent® and iStent® inject.
Notes: The first generation iStent (A) has a self-trephining tip which is inserted into Schlemm’s canal. The device is maintained by the three retention arches. The lumen is directed toward the anterior chamber. (B) iStent inject possesses four side holes opening toward Schlemm’s canal. The central lumen is directed toward the anterior chamber.
Abbreviation: AH, aqueous humour.
