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Gonioscopy Assisted Ab Interno Transillumination Trabeculotomy (GATT) with iTrack by iScience - YouTube
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Gonioscopy Assisted Ab Interno Transillumination Trabeculotomy by Michael Salter, MD
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Miochol is injected to constrict pupil
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The anterior chamber is deepened with a cohesive OVD such as Healon from AMO
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The iTrack catheter is placed into the anterior chamber and then the patient's head is tilted to a 45 degree angle
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A 20 gauge MVR blade is used to create a goniotomy incision
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The back wall of Schlemm's canal is recognized by the pearly white apperance
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OVD is used to displace any bleeding in order to keep adequate visualization
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Micrograsper forceps are then used to cannulate the canal with the iTrack catheter
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The catheter is then guided around the entire 360 degrees of Schlemm's canal
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An assistant slowly injects OVD through the catheter as it is passed around
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The surgeon is conscious of where the catheter is by following the blinking red light
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The catheter tip is then secured at the original goniotomy incision
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A 360 degree trabeculotomy is then performed
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OVD is removed with single piece or bimanual I/A
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